单项选择题

Questions 1 to 3 are based are the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now listen to the conversation.

Why does he often sit up

A.He is fascinated with PC games.
B.He watches too many soap operas.
C.He has to read many reference books.
D.He likes chatting with his roommates.