A Monopolist Faces Inverse Demand P = a - BQ $M R = a - b Q$

Multiple Choice

A monopolist faces inverse demand P = a - bQ. The monopolist's marginal revenue function is:

A) $M R = a - b Q$ .
B) $M R = a - Q$ .
C) $M R = a - 2 b Q$ .
D) $M R = a / Q - b$ .