Suppose Congress Passed a Law Preventing Lenders from Charging Debtors

Suppose Congress passed a law preventing lenders from charging debtors more than a 12 percent annual interest rate. Fritz's Loan Company has one office in Orlando and only lends money to people in Florida. Fritz challenges the constitutionality of the application of the law to his business, because he conducts it all within one state. The law is probably:

A) constitutional according to the Third Amendment
B) unconstitutional as the Commerce Clause is interpreted
C) unconstitutional as the Necessary and Proper Clause is interpreted
D) unconstitutional as the Third Amendment is interpreted
E) none of the other choices