单项选择题

[听力原文]
M: Miss Polly.
W: Yes, sir. Anything I can do for you
M: Yes, please make a call to Dell. Tell them that we’ll place an order for 20 personal computers.
W: All right. I ’11 do it at once.

What’s the relationship between the man and the woman()

A. Boss and secretary.
B. Father and daughter.
C. Customer and assistant.