Which of the following most accurately describes the Monetarist school of macroeconomic thought in relation to aggregate demand and aggregate supply Monetarists believe that the money supply should be:（）
A. Increased during inflationary periods and reduced during recessionary periods.
B. Increased by a constant rate annually.
C. Reduced during inflationary periods and increased during recessionary periods.
参考答案：B
解析：
Monetarists believe that to keep aggregate demand stable and growing, the central bank should follow a policy of steady and predictable increases in the money supply. Furthermore, monetarists believe that recessions are caused by inappropriate decreases in the money supply and that recessions can be persistent because money wage rates are downward sticky.