The Credit Rating Assigned to a Bond Reflects the Probability

The credit rating assigned to a bond reflects the probability that:

A) the bond's face value will increase above its market value.
B) the bond will go into default.
C) the company will earn extremely high returns on its bond's sinking fund investments.
D) the bond's maturity value will become lower than its principal value.
E) the firm will exercise a call provision on the bond.