问题
单项选择题
The quantity theory of money states that:（）
A. a decrease in the money supply will cause a proportional increase in prices.
B. monetary and fiscal policy must be used in tandem.
C. an increase in the money supply will cause a proportional increase in prices.
答案
参考答案：C
解析：
The quantity theory is in no way related to fiscal policy. Money supply multiplied by velocity must equal nominal gross domestic product (GDP).