For Any Resource It Hires,a Firm's Marginal Revenue Product

For any resource it hires,a firm's marginal revenue product

A) is the change in the firm's total cost divided by the change in employment of that resource
B) equals the resource's marginal factor cost
C) equals marginal cost
D) is the change in the firm's total revenue divided by the change in employment of that resource
E) equals the change in the firm's marginal revenue