Solve the Problem $$R ( p ) = - 5 p ^ { 2 } + 1590 p$$

Multiple Choice

Solve the problem.
-The manufacturer of a CD player has found that the revenue R (in dollars) is $$R ( p ) = - 5 p ^ { 2 } + 1590 p$$ when the unit price is p dollars. If the manufacturer sets the price p to maximize revenue, what is the maximum revenue to the nearest whole dollar?

A) $252,810
B) $1,011,240
C) $505,620
D) $126,405