Which of the following is true about a perfectly competitive firm’s supply curve in the short run?

A) It is the same as the marginal cost curve above the average variable cost.

B) It is vertical at the equilibrium price.

C) It is perfectly elastic at the market price.

D) It is downward sloping.

For Explanation Click Here:

In perfect competition, a firm’s short-run supply curve is its marginal cost curve above the average variable cost because the firm will only produce if it can cover its variable costs.