19. Which of the following statements is FALSE?
(A) In the short run, a monopolist might operate even though it is incurring an economic loss but in the short run a perfectly competitive firm always shuts down if it is incurring an economic loss.
(B) A monopoly can earn an economic profit in the long run but a perfectly competitive firm cannot.
(C)A monopoly can set its price while a perfectly competitive firm cannot.
(D) A monopoly is protected by barriers to entry while a perfectly competitive firm is not.

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