Suppose that a monopolistically competitive market is at the long-run equilibrium. Based on this information, which of the following conclusions is NOT true?
A. Deadweight loss is zero.
B. Firms' profits are zero.
C. P = ATC > minimum of ATC.
D. P > MC.
Answer: A
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The economy pictured in the figure has a(n) ________ gap with a short-run equilibrium combination of inflation and output indicated by point ________. 
A. recessionary; A B. recessionary; C C. recessionary; B D. expansionary; A
The difference between the marginal social cost and the marginal private cost equals the
A) cost of producing an additional unit of a good. B) marginal external benefit. C) marginal external cost. D) marginal private benefit.
The long-run labor demand curve is relatively flatter than the short-run labor demand curve because, in the short run,
A) the wage rate is fixed. B) the firm cannot vary the amount of capital used. C) the firm is a price taker. D) All of the above.
If quality-detection costs are very low,
a. lower quality products will tend to be outcompeted in the market, and the average quality will rise. b. lower quality products will tend to be outcompeted in the market, but the average quality will fall. c. higher quality products will tend to be outcompeted in the market, and the average quality will rise. d. higher quality products will tend to be outcompeted in the market, and the average quality will fall.