【单选题】

Questions 8 to 10 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.
Mr.Burton asks the manager to tell the man in apartment 4B、to ______.A．mm off the music after 10:00 pm
B．turn down the volume of his stereo
C．listen to light music rather than rock and toll
D．use headphones when listening to music