Throughout history, governments have used price controls to

MacDougall showed in his tests that

A) relatively higher U.S. labor productivity was associated with relatively higher U.K. export ratios. B) relatively higher U.K. labor productivity was associated with relatively higher U.K. export ratios. C) labor productivity ratios and export ratios were not associated with each other. D) None of the above.

A major characteristic of the theory of oligopoly is that:

a. there are no real-world examples. b. the reactions of each firm depends on how the firm believes rivals will react. c. in reality few oligopolies survive more than 10 years. d. none of these.