Today, you can buy a 25-year Treasury bond with a 4% coupon rate for $1072.77. Show your work. A. Calculate the Yield-to-Maturity for this bond. B. Assume that 4 years from now, the market rate of interest rises so that the required return for this same bond is 6.15%. Based on this, calculate the bond price at that time. C. Assume that you purchased the bond today for $1072.77 and sold it 4 years from now for the price you calculated in B. What was your rate of return (hint - you are solving for I/Y) over this four-year time horizon