Which of the following is NOT an economic good?

In the short run, if the marginal cost exceeds the marginal revenue, a perfectly competitive firm should:

a. raise the level of output to maximize profit. b. keep the level of output constant. c. raise the level of output to minimize loss. d. reduce the level of output to minimize loss. e. shut down.

Which of the following might result in an underestimation of GDP?

a. Significant underground activity such as trade in illegal drugs b. Sales of used cars c. Many intermediate goods d. Imported goods e. Exported goods