The Value of a Worker's Marginal Product ________

The value of a worker's marginal product ________.

A) is the additional revenue that the worker brings in to a firm
B) is always equal to the maximum price at which the product produced by the worker can be sold in a market
C) is the increment in the total cost of a firm when the worker is hired
D) equals the average product of a firm that hires the worker divided by the marginal product of the worker