In a competitive market, why does a firm charge the market price? A. If a firm charges less than the market price, it loses potential revenue. O B. If a firm charges more than the market price, it loses all its market power. C. The firm can only sell limited number of units of output, so it wants to sell at the market price in order to lower costs. D. A firm should NOT charge the market price in a competitve market. O E. All of the above are correct