Refer to Exhibit 9. For France, the opportunity cost of producing one unit of Brie is a. 2 b. 1/10 c. % d. 1/3 e. 10 unitis) of Sangria. Refer to Exhibit 9. For Spain, the opportunity cost of producing one unit of Brie is a. 1.5 b. 2 units) of Sangria. c. % d. 2/3 e. 10 Spain Brie France Brie Sangria Sangria 300 60 40 >20 20 7 L0 200 10 30 100 20 60 30 07 20 90