Here's a question I can't stress enough:

On the diagram for the market for money (google a diagram), the quantity of money is shown where quantity usually goes, but the interest rate is where the price usually goes. Why is the interest rate the price of money?

A. because your bank removes interest from your money when you keep it in a savings account

B. because you have to pay interest on your money when you fill out your taxes

C. because it represents the opportunity cost of holding money

D. because holding money requires you to make direct interest payments to the government