An investor obtained a fully amortizing mortgage 5 years ago for $85,000 at 10% for 25 years. Mortgage rates have dropped and the borrower can refinance at 8.5%. There is no prepayment penalty on the original loan but 2 points and a $3,000 loan fee are charged on the new loan at origination. What is the yield earned on the upfront refinancing costs if she plans to own the property for 13 more years? 19.57% 19.87% 19.08% 18.65%