听力原文：M: Morning, Alice. Still having problems with your faucet？
W: No, got that fixed. But I have another headache—trying to make a decision about credit cards. Well, I need one but which one？
M: Yes, that is tricky, especially since the rates are not standard.
W: That's fight. What people don't realize is that the credit associations like Visa and MasterCard don't issue credit cards or set terms and interest rates individual banks do,
M: So you will need to investigate what interest rates are charged by different issuers.
W: Yes, also how the rates are actually calculated, I think.
M: Alice, you should remember to ask them what roles you must follow to maintain these rates. If you don't pay off your bill, all new charges will begin rising immediately.
W: Yes, that's another problem and banks charge varying amounts for annual membership, late payments and exceeding your credit line.
M: You know, I read somewhere that 70% of people with credit cards pay interest on their purchases and only about 2% of the cardholders knew the interest rate they were being charged. Nearly all credit card debt carries an interest rate of 24% or less.
W: Wow, I guess I should ask a few hard questions.
(1)

A. She is not sure whether to get a credit card or not.
B. She is not sure how to use a credit card.
C. She is not sure which credit card to choose.
D. She is not sure how much credit line she needs.