2. The graph below shows the production possibilities curve for an economy that produces only two goods-hotdogs and smartphones. Hotdogs 300 250- 200- 150- 100- 50- 0- 0 a (0, 300) b (1, 250) Smartphones 2 c (2, 150) 3 d (3, 0) a. What is the opportunity cost of producing the first smartphone (point a to b) in terms of the number of hotdogs sacrificed? the cost of the second smartphone (point b to c)? the cost of the third smartphone (point c to d)? b. Do these results illustrate the law of increasing opportunity costs? Why or why not?