Scenario 10.9: Maui Macadamia Inc. Has a Monopoly in the Macadamia Nut

Scenario 10.9:
Maui Macadamia Inc. has a monopoly in the macadamia nut industry. The demand curve, marginal revenue and marginal cost curve for macadamia nuts are given as follows:
P = 360 - 4Q MR = 360 - 8Q MC = 4Q
-Refer to Scenario 10.9. What is the profit maximizing level of output?

A) 0
B) 30
C) 45
D) 60
E) none of the above