Let R Denote the Real Interest Rate and I Denote $\pi$

Multiple Choice

Let R denote the real interest rate and i denote the nominal interest rate; these two interest rates are related by:

A) i = $\pi$ .
B) i =R - $\pi$ .
C) i = R + $\pi$ .
D) i = R/ $\pi$ .
E) None of these answers is correct.