问题如下图：
选项：
A. 
B. 
C. 
解释：
A选项为什么是对的，为什么要与USA保持一样的inflation rate？
NO.PZ2016010801000081 问题如下 Whiof the following is least appropriate about Country if Country A pegs their currenexchange rate with the llar? A.Country A shoulkeep their inflation rate equto US B.Country A shoulsell llreserve if their currenis less valuable. C.Pegging exchange rate will crease the volatility of money supply in Country C is correct. Pegging exchange rate will increase the volatility of money supply in Country it will hmore volatile interest rate to keep inflation rate similto USA.考点Pegging exchange rate解析Pegging exchange rate 会增加A国货币供给的波动性，从而使通货膨胀率与美国的通胀率保持一致。A不入选。A国本币贬值的时候，A国政府就应该在外汇市场上买入本币，卖出外汇储备，所以B不入选。但是这种情况下，A国的利率受到货币供给变化的冲击会更加明显，表现也更不稳定。所以C入选。 为什么在本国货币贬值的时候要卖美元啊？
NO.PZ2016010801000081 问题如下 Whiof the following is least appropriate about Country if Country A pegs their currenexchange rate with the llar? A.Country A shoulkeep their inflation rate equto US B.Country A shoulsell llreserve if their currenis less valuable. C.Pegging exchange rate will crease the volatility of money supply in Country C is correct. Pegging exchange rate will increase the volatility of money supply in Country it will hmore volatile interest rate to keep inflation rate similto USA.考点Pegging exchange rate解析Pegging exchange rate 会增加A国货币供给的波动性，从而使通货膨胀率与美国的通胀率保持一致。A不入选。A国本币贬值的时候，A国政府就应该在外汇市场上买入本币，卖出外汇储备，所以B不入选。但是这种情况下，A国的利率受到货币供给变化的冲击会更加明显，表现也更不稳定。所以C入选。 不是，买本币，卖外币么？sell llreserve
NO.PZ2016010801000081 问题如下 Whiof the following is least appropriate about Country if Country A pegs their currenexchange rate with the llar? A.Country A shoulkeep their inflation rate equto US B.Country A shoulsell llreserve if their currenis less valuable. C.Pegging exchange rate will crease the volatility of money supply in Country C is correct. Pegging exchange rate will increase the volatility of money supply in Country it will hmore volatile interest rate to keep inflation rate similto USA.考点Pegging exchange rate解析Pegging exchange rate 会增加A国货币供给的波动性，从而使通货膨胀率与美国的通胀率保持一致。A不入选。A国本币贬值的时候，A国政府就应该在外汇市场上买入本币，卖出外汇储备，所以B不入选。但是这种情况下，A国的利率受到货币供给变化的冲击会更加明显，表现也更不稳定。所以C入选。 老师，能不能一下这道题，尤其这个peging rate是什么概念？有点不太理解谢谢
NO.PZ2016010801000081 为什么A不选。 另外pegging 一国的汇率属于哪种？a currenboararrangement 吗？还是crawling peg？
NO.PZ2016010801000081 请问本题中，exchange rate与money supply之间有什么关系？为什么pegging exchange rate就会影响一国的货币供给呢？看了之前的解答没有理解
