Express Bus Company Operates a Bus Route That Takes Passengers

Express Bus Company operates a bus route that takes passengers from Cleveland to Chicago every day.Assume the bus tickets sell for $50 per rider; the bus line's variable costs are $35 per rider; and its fixed costs are $75,000 each month.What is the contribution margin per rider?

A) $15.00
B) $ 0.30
C) $35.00
D) $ 3.33