When a Wholesaler Sells $n$ CD Players, the Revenue Is $R = 130 n - \frac { 1 } { 2 } n ^ { 2 }$

Multiple Choice

When a wholesaler sells $n$ CD players, the revenue is $R = 130 n - \frac { 1 } { 2 } n ^ { 2 }$ . How many CD players would the wholesaler have to sell to receive $\$ 8,450$ ?

A) $100$ CD players
B) $90$ CD players
C) $130$ CD players
D) $150$ CD players
E) $140$ CD players