When All of a Firm's Inputs Are Doubled,input Prices Do

Multiple Choice

When all of a firm's inputs are doubled,input prices do not change,and this results in the firm's level of production more than doubling,a firm is operating:

A) on the upward-sloping portion of its long-run average total cost curve.
B) on the downward-sloping portion of its long-run average total cost curve.
C) at the minimum of its long-run average total cost curve.
D) on the upward-sloping portion of its marginal cost curve.