单项选择题

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation.

Why didn’t Bill want one of them()

A.He wanted to buy one from Japan.
B.He wasn’t sure about its quality.
C.He thought it was for business use.
D.He thought it was expensive.