Suppose that two brothers, Adam and Ben, share work around the house. In particular, each week they spend one hour cleaning bathrooms and washing the dishes. Suppose it takes Adam 10 minutes to clean a bathroom and 5 minutes to wash a dish, while it takes Ben 15 minutes to clean a bathroom and 15 minutes to wash a dish.

From this information, we can conclude that Adam's opportunity cost of washing a dish is ____ ; Ben's opportunity cost of washing a dish is ____ ; and that _____ has the comparative advantage in washing dishes and that _____ has the comparative advantage in cleaning bathrooms.

A) 1 bathroom; 1/2 a bathroom; Ben; Adam.

B) 1/2 a bathroom; 1 bathroom; Ben; Adam.

C) 1 bathroom; 1/2 a bathroom; Adam; Ben.

D) 1/2 a bathroom; 1 bathroom; Adam; Ben.

E) 1 bathroom; 2 bathrooms; Adam; Adam.