问题如下：
If the economic environment has a high inflation rate, which of the following activity should be beneficiary.
选项：
A. lend money
B. borrow money
C. save money
解释：
B is correct.
Borrower is beneficiary because borrower will return money but the purchasing power will decrease for lender in the future.
考点：Inflation
解析：由于通胀的影响，货币当前的价值一定大于未来的价值。所以现在借别人的钱，未来还给别人钱是最划算的。所以B选项正确，A选项错误。
如果银行的存款利率低于通胀率，那么存钱也是不划算的，所以C选项错误。
感觉这个题目缺一个主体，是对谁的最优选择没说
