4. (20 points) You took a $100,000, 10-year, 3.5% APR balloon loan with your annual payment of $1,000. Five years later, the interest rate drops to 2.75%. You can keep the same feature of the loan with an annual payment of $1,000 for the remaining loan period if you refinance your loan today at 2.75% APR with a refinancing cost of $3,000. Should you refinance the loan? 1) (4 points) Complete the amortization table of the original loan. 2) (4 points) What is the contractual value of the loan at the end of year 5? 3) (4 points) What is the market value of the loan at the end of year 5? 4) (4 points) Complete the amortization table of the new loan. 5) (4 points) What is the gain/loss ($) from refinancing at the end of year 5? Complete the table for the part for the gain/loss. Should you refinance the loan