Which of the following lists is included in what economists call "money"?

A small change in the rate of productivity growth will have: a. a small impact on output in both the short run and the long run

b. a large impact on output in both the short run and the long run. c. a small impact on output in the short run but a large impact in the long run. d. a large impact on output in the short run but a small impact in the long run. e. no effect on output at all.

Over the last century, U.S. labor productivity has: a. fallen

b. been constant, on average. c. grown at about 2 percent per year. d. grown at about 8 percent per year. e. grown at about 15 percent per year.