Which one of the following statements is true of a bond’s yield to maturity?
-The yield to maturity of a bond is the discount rate that makes the present value of the coupon and principal payments equal to the price of the bond.
-It is the annual yield that the investor earns if the bond is held to maturity, and all the coupon and principal payments are made as promised.
-A bond's yield to maturity changes daily as interest rates increase or decrease.
-All of the above are true.