单项选择题

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

The man is surprised at the fact that

A.the sound of drilling is painful.
B.the woman has to have her tooth refilled.
C.teeth cannot be transplanted.
D.people can transplant hearts.