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47. Why must profits be zero in long-run competitive equilibrium a. If profits are not zero, firms will produce higher-quality goods. b. If profits are not zero, marginal revenue will rise. c. If profits are not zero, marginal cost will rise. d. If profits are not zero, firms will enter or exit the industry. 48. Resource allocative efficiency occurs when a firm a. minimizes costs of production yet charges the highest possible price. b. produces the quantity of output at which price exceeds average total cost by the greatest amount. c. produces the quantity of output at which price equals average total cost. d. produces the quantity of output at which price equals marginal cost. e. produces the quantity of output at which price equals average variable cost. 49. Exclusive dealing refers to a. selling to a retailer on the condition that the retailer not carry any rival products. b. charging one customer a higher price than another customer for the same good. c. a provision of the Sherman Act. d. the condition that is necessary before a conglomerate merger is likely to be successful. e. none of the above
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