单选题

　　[完成句子]In the United States， credit card fees have become a political issue. Congress has threatened to take action against some bad behavior by lenders. But getting a credit card has become a lot easier for most people. And many cards offer low rates at first， especially if people agree to move their money from another card.

　　In the USA， Congress has threatened to take action against some bad behavior to _____.

　　A、the interest charge on buying something

　　B、to show people the negative effects that credit cards bring to people

　　C、restrain the phenomenon of credit card fees

　　D、A key board