3. A mortgage borrower has an outstanding debt at interest rate of J12= 8% and 6000$ monthly payments for 69 months remaining today. Another bank is offering the same monthly payments but for 63 months only at a lower interest rate. For the refinancing, borrower has to pay 10.000$ expense today. Decide if the borrower should refinance the debt or not by showing the difference of discounted values of two alternatives. (35 points) (hint: you must use the same interest rate for discounting two options to be able to compare)