Today an investor purchases a 30 -year bond (face value =$1,000 ) for $627.73. The bond has a coupon rate of 4% and a yield to maturity of 7%. It pays coupons annually (not semiannually). The investor plans to hold the bond for 1 year. If the yield to maturity of the bond becomes 8% at the end of the year, what is the bond rate of return over the year? (Hint) The period for the bond return calculation is a 1-year window between today and one yearlater. Note that you need to find the period-end bond price