Scenario 10.3: The Demand Curve and Marginal Revenue Curve for Red Herrings

Scenario 10.3:
The demand curve and marginal revenue curve for red herrings are given as follows:
Q = 250 - 5P
MR = 50 - 0.4Q
-Refer to Scenario 10.3. The marginal cost of red herrings is given as: MC = 0.6Q. What is the profit-maximizing level of output?

A) 0
B) 25
C) 50
D) 60
E) 125