Coverall Carpets Inc. is planning to borrow $12,000 from the bank. The bank offers the choice of a 12 percent discount interest loan or a 10.19 percent add-on, one-year installment loan, payable in 12 equal monthly payments. What is the effective annual rate of interest on the 10.19 percent add-on loan?

a. 5.10%

b. 10.19%

c. 19.92%

d. 20.38%

e. 30.57%