If a competitive firm’s marginal cost curve is U-shaped then A) its s

If a competitive firm’s marginal cost curve is U-shaped then

A) its short run supply curve is U-shaped too
B) its short run supply curve is the downward-sloping portion of the marginal cost curve
C) its short run supply curve is the upward-sloping portion of the marginal cost curve
D) its short run supply curve is the upward-sloping portion of the marginal cost curve that lies above the short run average variable cost curve
E) its short run supply curve is the upward-sloping portion of the marginal cost curve that lies above the short run average total cost curve

ANSWER

D