A Competitive Firm Sells Its Output for $25 Per Unit

A competitive firm sells its output for $25 per unit.The marginal product of the 10th worker is 10 units of output per day;the marginal product of the 11th worker is 8 units of output per day.The firm pays its workers a wage of $160 per day.

A) For the 10th worker,the value of the marginal product of labor is $50.
B) For the 10th worker,the value of the marginal product of labor is $250.
C) For the 10th worker,the value of the marginal product of labor is $300.
D) For the 10th worker,the value of the marginal product of labor is $1,500.