has an absolute advantage in the production of corn, and has an absolute advantage in the production of rye.

Sean's opportunity cost of producing 1 bushel of rye isbushels of corn, whereas Yvette's opportunity cost of producing 1 bushel of rye isbushels of corn. Because Sean has a opportunity cost of producing rye than Yvette, has a comparative advantage in the production of rye, and has a comparative advantage in the production of corn.