When purchasing a $100,000 house, a borrower is comparing two loan alternatives. The first loan is an 80% loan at 4% with monthly payments of $591.75 for 15 years. The second loan is 90% loan at 5% with monthly payments of $526.13 over 25 years. What is the incremental cost of borrowing the extra money assuming the loan will be held for the full term? 6.50% 13.21% O7.20% 13.70%