【单选题】听力原文:Narrator Listen to part of a talk in an economy class. Professor Many businesses, such as department stores, restaurants, hotels, and airline companies, use a credit system for selling their prod...
A.
The satisfactory 'buy-now, pay-later' credit system.
B.
The ways the credit companies use to issue credit cards.
C.
The classification and advantages and disadvantages of credit cards.
D.
The difference between store credit cards and other credit cards.