For the market to be perfectly competitive, firms must be price takers who produce a homogeneous product and can easily enter and exit the market. If firms can easily enter and exit the market, then firms will (] a) produce where price equals marginal revenue. b) produce at minimum average variable cost in the long run. (d) produce at minimum average cost in the long run. d) earn zero economic profit in the short run. "e) produce where price equals marginal cost. 0 none of the above