【单选题】

Questions 4 to 7 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.
What is wrong with the woman’s current apartmentA．It is too noisy.
B．The walls are too thin.
C．The buses do not go in that direction.
D．The boiler often goes wrong.