单项选择题

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.
How far is the aquarium

A. 14 or 15 minutes on foot.
B. 14 or 15 minutes by bus.
C. 40 to 45 minutes on foot.
D. 40 to 45 minutes by bus.