Which statement is true?

A) Usury laws enable banks to charge higher credit card interest than the price mechanism would allow.
B) Usury laws prevent banks from charging higher credit card interest rates that the price mechanism would allow.
C) Usury laws have never had any effect on how much interest is charged.
D) None of the statements is true.

Usury laws are regulations that set a legal limit on the amount of interest that can be charged on loans. In some cases, the limit set by usury laws is lower than what the market would allow, which means that if these laws were not in place, banks would be able to charge higher interest rates. Therefore, choice B is correct because usury laws prevent banks from charging higher credit card interest rates that the price mechanism would allow.