hello. i am stuck on this question.

A corporate bond with a 5.5% coupon has 16 years left to maturity. It has had a credit rating of BBB and a yield to maturity of 7.5%. The firm has recently gotten into some trouble and the rating agency is downgrading the bonds to BB today. The new appropriate discount rate will be 8.25%. What will be the net change in the bond price as a result of this downgrade? A. $57.33 price increase B. $758.10 price increase C. $815.43 price increase D. $815.43 price reduction E. Insufficient information is provided to calculate this answer F. $758.10 price reduction G. $57.33 price reduction