Another term for the opportunity cost of capital is

In the long run, a decrease in the price level: a. leaves output prices unchanged relative to input prices. b. decreases the profit margins of many producers

c. decreases RGDP supplied. d. Does none of the above

Using Figure 1.6, you can tell that 

A. there is constant opportunity cost. B. there is unemployment. C. there is increasing opportunity cost. D. the technology does not exist to produce 90 units of soda and 2 units of pizza.