The Following Table Indicates the Production Possibilities of Food and Clothing

The following table indicates the production possibilities of food and clothing per worker day in the United States and Japan.
Which of the following is true?

A) No gains from trade are possible.
B) Joint output would be maximized if the United States specialized in producing clothing and Japan in producing food.
C) Mutual gains from trade could be realized if the United States specialized in food production and Japan in clothing production.
D) The Japanese are the high-cost producers of both food and clothing.