Question : 21) The cost incurred from the production of an additional : 1388080
21) The cost incurred from the production of an additional unit of a product A) is a marginal cost to the firm. B) is called a loss. C) is called opportunity cost. D) must be zero for a firm to be efficient. 22) Before a doctor decides to keep her office open on Saturdays, she should A) make sure that the marginal […]