听力原文：W: Sound and Vision, Administrative Department, Eve Wheeler speaking. Can 1 help

M: Good afternoon, Madam. This is John Cruise. I wish to register a complaint about my video recorder.

W: I see. I hope I can be of some help. Can you explain what the problem is, please？

M: Well, the recorder has severely damaged two quite valuable tapes of mine. And you guaranteed that this machine is the best there is. I hope you understand that a simple repair is just not enough; I demand compensation for the lost tapes as well.

W: I'm sorry; that's all very unfortunate. I'm sure something can be done. I will put you through to our legal consultant, Mrs. Schroder. One moment please. (dialing sound ... )

W: Hello, Mr. Cruise？ Thank you for waiting. I'm awfully sorry, but Mrs. Schroder is having a meeting right now. Could she call you back later this afternoon？

M: I hope you're not trying to get rid of me.

W: Not at all, Sir. I have noted your complaint and I will urge Mrs. Schroder to call you back as soon as possible. Could I have your phone number, please？

M: Yes. It's 0181 945 8719.

W: Thank you very much. Goodbye.

M: Bye.

What's the possible relationship between the two speakers？

A．Legal consultant and client.

B．Saleswoman and customer.

C．Purchasing manager and clerk.

D．Administrative officer and customer.