问题如下：
Which of the following chronic deficit conditions is least alarming to the deficit country’s creditors?
选项：
A.High consumption.
B.High private investment.
C.High government spending.
解释：
B is correct.
A current account deficit tends to result from low private saving, high private investment, low government savings, or a combination of the three. Of these choices, only high investments can increase productive resources and improve future ability to repay creditors.
考点：Trade Balance.
解析：
私人投资领域和科技以及生产资源相关。这些投资在未来能带来极大的回报。比如外溢效益，以及科技对于生产的推动。所以政府即便现在是债务人，在未来它也能还得起债务，无需担心。而A,C选项就没有这个功效，所以不入选。
老师，请分析一下，为什么B是最不需要担心的？AC就要担心了？之前有道例题是分析了low investment 对deficit country creditor 影响最大的。虽然可以死记硬背。。。但是还是想从理解的角度看下这三个因素的程度对比。C, I, G对一国偿还能力的影响。
