问题如下图：老师你好,这题用的还是X-M=S-I-(G-T)的公式吗？能不能说下trade deficit和capital account surplus的关系？
选项：
A. 
B. 
C. 
解释：
NO.PZ2016010801000119 问题如下 In orr to retra ficit in a country, a feasible wis A.Increasing its capitaccount surplus. B.creasing expentures relative to income. C.creasing mestic saving relative to mestic investment. B is correct.In a country, creasing a capitaccount surplus will improve a country tra ficit, whimeans mestic savings increase relative to mestic investment. mestic savings increase means creasing expentures relative to income. A large capitaccount surplus (increase in net foreign borrowing) ana greater tra ficit is consistent with creasing mestic saving relative to mestic investment.考点The Tra Balance在一个国家，减少资本账户盈余将改善该国的贸易赤字，这意味着国内储蓄相对于国内投资有所增加。所以A错误，B正确。 而国内储蓄的增加意味着支出相对于收入的减少。所以C错误。巨额资本账户盈余(净外国借款的增加)和更大的贸易逆差，与国内储蓄相对于国内投资的减少是一致的。 看助教老师之前的答疑说“X-M是经常账户，M-X是资本账户”。那资本账户跟国内储蓄和国内投资有什么关系呢？我理解的是，既然M-X是资本账户，那么M-X如果大于零的话，就相当于花的钱多于收到的钱，所以投资大于储蓄。是这样理解的吗？
NO.PZ2016010801000119 问题如下 In orr to retra ficit in a country, a feasible wis A.Increasing its capitaccount surplus. B.creasing expentures relative to income. C.creasing mestic saving relative to mestic investment. B is correct.In a country, creasing a capitaccount surplus will improve a country tra ficit, whimeans mestic savings increase relative to mestic investment. mestic savings increase means creasing expentures relative to income. A large capitaccount surplus (increase in net foreign borrowing) ana greater tra ficit is consistent with creasing mestic saving relative to mestic investment.考点The Tra Balance在一个国家，减少资本账户盈余将改善该国的贸易赤字，这意味着国内储蓄相对于国内投资有所增加。所以A错误，B正确。 而国内储蓄的增加意味着支出相对于收入的减少。所以C错误。巨额资本账户盈余(净外国借款的增加)和更大的贸易逆差，与国内储蓄相对于国内投资的减少是一致的。 改善经常账户赤字，即增加(X-M)，按照课堂讲义讲解，如有赤字，即X-M 0, 则需要海外资本流入，如以下幻灯片所述如此，外资流入，不就带来资本账户金额增加吗？怎么又是减少？我看到之前老师的答疑为（X-M）的增加即（M-X）的减少，其中（M-X）即为资本账户，那幻灯片中capitinfiow又如何理解？
NO.PZ2016010801000119 问题如下 In orr to retra ficit in a country, a feasible wis A.Increasing its capitaccount surplus. B.creasing expentures relative to income. C.creasing mestic saving relative to mestic investment. B is correct.In a country, creasing a capitaccount surplus will improve a country tra ficit, whimeans mestic savings increase relative to mestic investment. mestic savings increase means creasing expentures relative to income. A large capitaccount surplus (increase in net foreign borrowing) ana greater tra ficit is consistent with creasing mestic saving relative to mestic investment.考点The Tra Balance在一个国家，减少资本账户盈余将改善该国的贸易赤字，这意味着国内储蓄相对于国内投资有所增加。所以A错误，B正确。 而国内储蓄的增加意味着支出相对于收入的减少。所以C错误。巨额资本账户盈余(净外国借款的增加)和更大的贸易逆差，与国内储蓄相对于国内投资的减少是一致的。 a为啥错误，上一题才说了这个答案是正确的
NO.PZ2016010801000119 问题如下 In orr to retra ficit in a country, a feasible wis A.Increasing its capitaccount surplus. B.creasing expentures relative to income. C.creasing mestic saving relative to mestic investment. B is correct.In a country, creasing a capitaccount surplus will improve a country tra ficit, whimeans mestic savings increase relative to mestic investment. mestic savings increase means creasing expentures relative to income. A large capitaccount surplus (increase in net foreign borrowing) ana greater tra ficit is consistent with creasing mestic saving relative to mestic investment.考点The Tra Balance在一个国家，减少资本账户盈余将改善该国的贸易赤字，这意味着国内储蓄相对于国内投资有所增加。所以A错误，B正确。 而国内储蓄的增加意味着支出相对于收入的减少。所以C错误。巨额资本账户盈余(净外国借款的增加)和更大的贸易逆差，与国内储蓄相对于国内投资的减少是一致的。 rt
NO.PZ2016010801000119 问题如下 In orr to retra ficit in a country, a feasible wis A.Increasing its capitaccount surplus. B.creasing expentures relative to income. C.creasing mestic saving relative to mestic investment. B is correct.In a country, creasing a capitaccount surplus will improve a country tra ficit, whimeans mestic savings increase relative to mestic investment. mestic savings increase means creasing expentures relative to income. A large capitaccount surplus (increase in net foreign borrowing) ana greater tra ficit is consistent with creasing mestic saving relative to mestic investment.考点The Tra Balance在一个国家，减少资本账户盈余将改善该国的贸易赤字，这意味着国内储蓄相对于国内投资有所增加。所以A错误，B正确。 而国内储蓄的增加意味着支出相对于收入的减少。所以C错误。巨额资本账户盈余(净外国借款的增加)和更大的贸易逆差，与国内储蓄相对于国内投资的减少是一致的。 这个A是什么意思？不懂
