Books help broaden the mind. Books also provide a...

Câu hỏi: Books help broaden the mind. Books also provide a good source of entertainment.

A. Books help broaden the mind, but they provide a good source of entertainment.

B. Books help broaden the mind, and they provide a good source of entertainment.

C. Books help broaden the mind, for they provide a good source of entertainment.

D. Books help broaden the mind, or they provide a good source of entertainment.