Roxanne took out a loan at a 6.8% APR, compounded monthly, to buy a kitchen counter, and she is making monthly payments to pay off the loan. Which of these interest rates would have allowed Roxanne to pay off the loan faster?
A. 7.2%, compounded monthly
B. 7.6%, compounded monthly
C. 8.0%, compounded monthly
D. 6.4%, compounded monthly