Indicate whether each of the following statements is true or false, and explain your answer.
a. If a monopolist is producing a level of output at which demand is inelastic, the firm is not maximizing profits, and increasing output will decrease total revenue.
b. When a monopolist maximizes profits, the price is greater than the marginal cost of producing the output. This means that consumers are willing to pay more for additional units of the product than these additional units cost to produce. Thus, the monopolist should produce and sell additional units of output.
c. In a monopolistically competitive market, a firm has market power because it produces a differentiated product. This means that the firm earns positive economic profit in the long run.
d. A monopolistically competitive firm produces a level of output at which price equals $80, marginal revenue equals $40, average total cost equals $100, marginal cost equals $40, and average fixed cost equals $10. To maximize profit, the firm should produce a smaller output and sell it at a higher price.