The Marginal Cost Function for the Manufacture of Portable CD $C ^ { \prime } = 50 - \frac { x } { 500 }$

Multiple Choice

The marginal cost function for the manufacture of portable CD players is given by
$C ^ { \prime } = 50 - \frac { x } { 500 }$
where x is the number of CD players manufactured. Use a Riemann sum with n = 5 to estimate the cost of producing the first 5 CD players. Round your answer to the nearest cent.

A) $249.96
B) $249.95
C) $224.98
D) $249.97
E) $249.98