An increase in product price implies that

A firm in a perfectly competitive industry will maximize profits by adjusting

A) average total cost until it equals price. B) price until marginal revenue equals marginal cost. C) output until average revenue equals short-run average total cost. D) output until marginal cost equals marginal revenue. E) price until average revenue equals average total cost.

The danger in using data to estimate the consequences of a proposed policy is that ________

A) the data can reveal only the benefits of a policy, while estimating the policy's costs is important, also B) policies change so often that data can never reveal which policies are the cause of which consequences C) the public's expectations about the policy might influence the data, making the policy seem more or less appropriate than is actually the case D) the proposed policy, if implemented, might cause unforeseeable changes in the relationships that were in operation when the data were produced