Each firm in a perfectly competitive industry Question 20 options: A) attains economies of scale so that its efficient size is large compared to the market as a whole. B) has an important influence on the market price of the good or service being produced. C) produces a good that is slightly different from that of the other firms. D) produces a good that is identical to that of the other firms. E) has control over at least one unique resource to separate themselves from their competitors