If an Unregulated Electric Company Is a Monopolist and Faces $5 - \frac { 1 } { 10 } Q$

Multiple Choice

If an unregulated electric company is a monopolist and faces demand of Q = 50 - 10P,its marginal revenue function is given by

A) $5 - \frac { 1 } { 10 } Q$
B) $1 - \frac { 1 } { 10 } Q$
C) $5 - \frac { 1 } { 20 } Q$
D) $5 - \frac { 1 } { 5 } Q$