What is the difference between a monopolistically competitive industry and a monopoly?
a. A monopolistic competitor faces a downward-sloping demand curve for its output, while a monopoly faces a perfectly elastic demand for its output.
b. The demand curve for a monopolistic competitor's output is the industry's demand curve. c. A monopolistic competitor maximizes its economic profits by producing the amount of output for which its marginal revenue equals it marginal cost, while a monopolist maximizes economic profit by producing the amount of output for which marginal cost equals its average total cost.
d. A monopolist can make positive economic profits in the long run, while a monopolistic competitor will earn zero economic profits in the long run.