Which of the Following Describes Comparative Advantage

Multiple Choice

Which of the following describes comparative advantage?

A) Firm A can produce a good at a cost of $3 a unit,and Firm B can produce the same good at a cost of $4 a unit.
B) Jane can type 50 words per minute,and Joe can type 60 words per minute.
C) Firm A can produce 4 boxes of cereal in a day,and Firm B can produce 5 boxes of cereal in a day.
D) To produce a basket of wheat,Farmer John must give up growing 2 baskets of corn,whereas Farmer Ben must give up 3 baskets of corn to produce a basket of wheat.
E) Bill can read one book in a week,but it takes Jeannie 10 days to read the same book.