If a typical firm in a perfectly competitive industry is incurring​ losses, then A. all firms will continue to lose money. B. some firms will enter in the long run causing market supply to increase and market price to​ rise, increasing profit for all firms. C. some firms will exit in the long run causing market supply to decrease and market price to​ fall, increasing losses for the remaining firms. D. some firms will exit in the long run causing market supply to decrease and market price to​ rise, increasing profits for the remaining firms.