B
Test question analysis: A credit card is an electronic payment card with some or all functions such as consumption, transfer settlement, cash deposits and withdrawals, and credit loans. Among them, bank credit card is a credit certificate issued by commercial banks to customers with good credit status. Option B is correct and the other options are incomplete.
Comments: This question is of medium difficulty. It tests the knowledge points of credit cards. Candidates should memorize: Credit cards are frequently used credit tools in economic transactions and settlements. They include consumption, transfer settlement, cash deposits and withdrawals, and credit loans. or a fully functional electronic payment card.