The relationship between two variables, x and y, is a vertical line. Thus x and y are

An increase in the money supply will affect aggregate demand

A) only if the increase in the money supply causes interest rates to rise. B) only if the increase in the money supply causes people to buy less goods and services. C) only if the increase in the money supply causes people to increase their saving. D) if the increase in the money supply causes interest rates to fall and/or causes people to buy more goods and services.

Which of the following components are involved in microeconomics?

a. aggregate economy; firms; agricultural subsidies b. aggregate economy; households; inflation c. smaller economic units; households; income distribution d. smaller economic units; firms; business cycles