Under Perfect Competition,if an Industry Is Characterized by Positive Economic

Multiple Choice

Under perfect competition,if an industry is characterized by positive economic profits in the short run

A) firms will leave the market in the long run and the short-run supply curve will shift outward.
B) firms will enter the market in the long run and the short-run supply curve will shift outward.
C) firms will enter the market in the long run and the short-run supply curve will shift inward.
D) firms will leave the market in the long run and the short-run supply curve will shift inward.