All of the following countries come close to the free market benchmark except

Predatory pricing involves a firm

a. colluding with another firm to restrict output and raise prices. b. selling two individual products together for a single price rather than selling each product individually at separate prices. c. temporarily cutting the price of its product to drive a competitor out of the market. d. requiring that the firm reselling its product do so at a specified price.

Suppose Frank likes to snack on sugary candy. Frank knows that it's bad for his teeth to eat sugary candy, but he doesn't care. Frank's snacking habits have no impact on anyone other than Frank. In this case, Frank's consumption of sugary candy generates:

A. a positive externality. B. a negative externality. C. neither a positive nor a negative externality. D. both a positive and a negative externality.