Suppose that a firm's long-run average total costs of producing small commuter jet airplanes increases as it produces between 2,000 and 4,000 airplanes. For this range of output, the firm is experiencing

The figure above shows that as a result of the tariff, producer surplus in the United States

A) decreases by $105 million per year. B) increases by $55 million per year. C) decreases by $30 million per year. D) decreases by $20 million per year. E) remains unchanged.

According to William Shepard, the growth in competition from 1958 to 1988 in the United States can be attributed to

a. imports, efficient economic regulation, and antitrust activity b. the rise of the global market and inflation c. the fall of communism d. imports, deregulation, and antitrust activity e. exports, deregulation, and technological improvement