1. What is the marginal opportunity cost of producing the second unit of butter? 2. What is the total opporunity cost of producing the second unit of butter? 3. What is the marginal opporutnity cost of producing the third unit of butter? 4. What is the total opportunity cost of producing the third unit of butter?CombinationsGunsButterA04B143C262D361E440 Solution a. (36 26 = 10) 10 units of guns b. (44 26 = 18) 18 units of guns c. (26 14 =12) 12 units of guns D. (44 14 = 30) 30 units of guns.