为什么投资也会减少

问题如下：

In explaining the downward slope of the aggregate demand curve, the interest rate effect suggests that a higher price level will:

选项：

A.lead to lower interest rates, which will lead to higher levels of consumptionand investment. B.lead to higher interest rates, which will lead to lower levels of consumption and investment. C.not affect interest rates and therefore will lead to a higher level of aggregate demand

解释：

Assuming a fixed supply of money, a higher price level will lead to a higher price of money. Because the price of money is the interest rate, as the price level increases, the interest rate increases. Higher interest rates will lead to lower consumption and investment.

中文解析：

假设货币供给固定，较高的价格水平将导致较高的货币价格。因为货币的价格就是利率，随着价格水平的上升，利率也随之上升。高利率将导致消费和投资减少。