1. You have a cash obligation of $132,240 to be made at the end of year 5. Show how you can use coupon bonds with a coupon rate of 8%, a face value of $1,000, a maturity date at the end of year 6, and a yield to maturity of 8% to ensure that you can meet your cash obligation at the end of year 5. Suppose that you purchase the bonds at the beginning of year 1 and that the market interest rate changes only once right after you have purchased the bonds. There are three possible interest rates, 7.9%, 8%, and 8.1%, each of which occurs with probability 1/3