C选项

问题如下：

The monetary policy is limited because monetary authorities fail to:

选项：

A.

control the willingness of banks to lend.

B.

control the amount of money supply.

C.

control the inflation rate.

解释：

A is correct.

Banks can not control the amount of money that economic agents put in banks and the willingness of banks to make loans . The above reason limit the power of monetary policy.

考点：Limitation of Monetary Policy

解析：央行不能控制商业银行的贷款意愿，在经济不好的时候，商业银行不愿意贷款给企业，因为担心贷出去的资金打水漂，这便是货币政策的限制之一。所以A选项正确。

央行可以控制货币的供给量，因此这不算货币政策的缺点。B选项不入选。

央行可以通过减少货币供给量，控制通货膨胀，这也不算货币政策的缺点限制。C选项不入选。