Suppose $I = f(r)$ is the interest earned, in dollars, on a 10,000 dollar deposit at an interest rate of $r$ percent per year, compounded annually.

Which of the statements below best explains the meaning of the INVERSE function $f^{-1}$?

A. The interest rate $r$ percent for 10,000 dollars invested
B. The total amount of money, in dollars, when the interest rate is $r$ percent
C. The interest earned, in dollars, when the interest rate is $r$ percent
D. The interest rate $r$ percent for $I$ dollars interest earned
E. None of the above