Credit Risk. A bond’s credit rating provides a guide to its risk. Suppose that long-term bonds rated Aa currently offer yields to maturity of 7.5%. A-rated bonds sell at yields of 7.8%. Suppose that a 10-year bond with a coupon rate of 7.6% is downgraded by Moody’s from an Aa to A rating. (LO6-5) a. Is the bond likely to sell above or below par value before the downgrade? b. Is the bond likely to sell above or below par value after the downgrade?