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Which of the following statements is true when the market demand curve is downward sloping and linear.
a. The deadweight loss generated by a perfect price discriminating monopolist equals the deadweight loss of the single price monopolist.
b. The consumer surplus under a perfect price discriminating monopolist equals the consumer surplus under perfect competition.
c. For a perfectly competitive firm, price is greater than marginal cost in the short run equilibrium if it makes positive profits.
d. For a monopolistic competitive firm, price is greater than marginal cost in the short run equilibrium if it makes positive profits.