I need an explanation

What should a firm do if the sales price is $9, output is 5,000 units, average total cost is $12, marginal cost is $9, and average variable cost is $9.50? O a. Continue to produce because price can be increased O b. Shut down because the price is less than the average variable cost O c. Shut down because the firm's earning a loss of $15.00 O d. Continue to operate and reduce costs to earn a profit