Suppose an American Worker Can Make 20 Pairs of Shoes

Suppose an American worker can make 20 pairs of shoes or grow 100 apples per day. On the other hand, a Canadian worker can produce 10 pairs of shoes or grow 20 apples per day. Which of the following statements is true?

A) The United States has an absolute advantage at producing both shoes and apples.
B) Canada has an absolute advantage at producing both shoes and apples.
C) The United States has an absolute advantage at producing shoes and Canada has an absolute advantage at producing apples.
D) Canada has an absolute advantage at producing shoes and the United States has an absolute advantage at producing apples.