问题详情

Whatdolargebanksallowindividualbankstodo？
A．Tosellcreditcardstoconsumers.
B．Tojointheircreditcardnetwork.
C．Toprovideotherbankingservices.
D．Tospecializeinfederalfunds.

请帮忙给出正确答案和分析，谢谢！