NO.PZ2023010401000121
问题如下：
Which action is a central bank least likely to take if it wants to encourage businesses and households to borrow for investment and consumption purposes?
选项：
A.Sell long-dated government securities.
B.Purchase long-dated government treasuries.
C.Purchase mortgage bonds or other securities.
解释：
Such action would tend to constrict the money supply and increase interest rates, all else equal.
中文解析：
在其他条件相同的情况下，这样的行动往往会收缩货币供应，提高利率。
bc的本质都是收回债券增加货币供给嘛
