The Market Price Has Fallen Below a Firm's Average Total

The market price has fallen below a firm's average total costs, and the firm is now earning a loss. What is the best action for the firm to take in the short run?

A) Produce where marginal cost equals marginal revenue to minimize losses, as long as price is greater than average variable costs.
B) Shut down if price is greater than average variable costs.
C) Produce where marginal cost equals marginal revenue to minimize losses, as long as price is less than average variable costs.
D) Shut down if total revenue is less than fixed costs.