问题
单项选择题
Which of the following are the two most important tools available to the Federal Reserve（）
A. Changing the discount rate and changing bank reserve requirements.
B. Open market operations and changing bank reserve requirements.
C. Changing the discount rate and open market operations.
答案
参考答案：C
解析：
The two most important tools available to the Fed are changing the discount rate, the rate at which banks can borrow from the Fed’s discount window, and open market operations, the Fed’s activity of buying and selling Treasury securities.