Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions:
Figure: Computers and Books
-(Figure: Computers and Books) According to the figure, both countries can increase consumption if:

A) both countries buy computers and books from each other.
B) both countries produce both computers and books.
C) country A produces only computers and buys books from country B.
D) country A produces only books and buys computers from country B.