If the U.S. focuses only on making corn, it can make 200 tons per day; if it focuses only on making coffee, it can make 40 tons per day. If Brazil focuses only on making corn, it can make 20 tons per day; if it focuses only on making coffee, it can also make 20 tons per day. Assume all PPFs are straight lines. Which country holds an absolute advantage in making corn? O a) U.S. Ob) Brazil