If companies earn economic profits in a perfectly competitive market, over the long run the supply curve will most likely:
A.正确答案Bshift to the left.
B.shift to the right.
C.remain unchanged
If companies earn economic profits in a perfectly competitive market, over the long run the supply curve will most likely:
A.正确答案Bshift to the left.
B.shift to the right.
C.remain unchanged
