单选题
If the money interest rate is measured on the y-axis and the quantity
of money is measured on the x-axis, the money supply curve is:
A. horizontal.
B. upward sloping to the upper right.
C. vertical.
【正确答案】
C
【答案解析】The money supply schedule is vertical because it is not affected by changes in the interest rate but is determined by the monetary authorities such as the Federal Reserve System (Fed) in the United States.