12. Which of the following does not illustrate the free rider problem? A. Amy does not contribute to public television, but she watches it every day. B. Roger refuses to help pay for the private security officer who patrols his neighborhood. C. Amanda, a taxpayer, prefers to check out books from her local library rather than purchasing them herself. D. Frank enjoys the fireworks from his lawn and does not purchase a ticket to view the display from the stadium.

13. In a short-run decision: A. a firm has more options than in the long run. B. a firm has fewer options than in the long run. C. a firm has the same number of options as in the long run. D. there is no relation between the number of options a firm has and whether it is a short-run decision or a longrun decision.