Consider a Firm in the Short Run

Multiple Choice

Consider a firm in the short run.If total product is at its maximum,then

A) average product must equal marginal product.
B) average product must be rising and must lie above marginal product.
C) marginal product must be greater than zero and must be falling.
D) marginal product must be falling and be equal to zero.
E) average product must be falling and be equal to zero.