Let R Denote the Real Interest Rate, I Denote the Nominal

Multiple Choice

Let R denote the real interest rate, i denote the nominal interest rate, and $\pi$ denote the rate of inflation. The equation i = R + $\pi$ is called:

A) the money supply.
B) the quantity equation.
C) the Fisher equation.
D) the quantity theory of money.
E) money neutrality.