Which of the following statements about a competitive firm's supply curve is true?

Group of answer choices

None of the other answers is correct.

The long run supply curve is perfectly elastic at the minimum of long run average cost.

The short run supply curve is the LMC curve above the minimum of AVC.

The short and long run supply curves are the MC curve above ATC.

The short and long run supply curves are the SMC curve above AVC.