听力原文：M: Hello, can you put me through to Jack, your Marketing Manager？
F: OK, hold on, please ... I am sorry. Jack's on the phone right now.
M: Then, I will call him later this afternoon.
F: Can you tell me what time you will call him？
M: At about half past four.
F: Now it is half past three. That is one hour later.
•For questions 1-8 you will hear eight short recordings.
•For each question, mark one letter (A, B or C) for the correct answer.
•You will hear the eight recordings twice.
What time will the man call again？

A. 15:30
B. 16:30
C. 17:30