Refer to the figure below. For the nation whose PPC is shown, it must be true that:
A.the nation’s productive resources are better-suited to making milk than to making movies.
B.the nation’s productive resources are better-suited to making movies than to making milk.
C.the nation has a comparative advantage in making milk.
D.some of the nation’s productive resources are better-suited to making milk, and some are better-suited to making movies.
正确答案：some of the nation’s productive resources are better-suited to making milk, and some are better-suited to making movies.
