The Acme Company Is a Perfect Competitor in Its Input

Multiple Choice

The Acme Company is a perfect competitor in its input markets and a monopolist in its output market. The marginal product of labor is 20 and the price of Acme's output is $10. For Acme Company, the marginal revenue product of labor is:

A) less than $10.
B) $10.
C) $20.
D) less than $200.
E) $200.