听力原文：M: Will that be cash or charge？W: I want to pay by check if I may.M: Certainly. T

听力原文：M: Will that be cash or charge？

W: I want to pay by check if I may.

M: Certainly. That's cash, then.

W: Cash？

M: Yes, Both money and checks are considered as cash. Only credit cards are charge.

W: Oh.

M: Just make the check out to the Family Store.

W: Okay.

M: And I'll need two pieces of identification. A driver's license and a major credit card.

W: Well, here's my driver's license, I don't have any charge cards.

M: I think so. I need two numbers. Your student number is on the ID, isn't it？

W: Yes, it is. Do you need anything else？

M: Just put your telephone number on the front of the check.

W: Okay.

M: Good. Now let me give you your license,' your ID, and your package. And thank you for shopping at the Family Store.

W: Thank you.

What is the purpose of the conversation？

A．To help the woman make a purchase.

B．To request the woman's identification.

C．To show the woman for a course at City College.

D．To register the woman how to make out a check.