Parts A, B, and C please!

A BBB-rated corporate bond has a yield to maturity of 10.4%. A U.S. Treasury security has a yield to maturity of 8.7%. These yields are quoted as APRs with semiannual compounding. Both bonds pay semiannual coupons at an annual rate of 9.1% and have five years to maturity. a. What is the price (expressed as a percentage of the face value) of the Treasury bond? b. What is the price (expressed as a percentage of the face value) of the BBB-rated corporate bond? c. What is the credit spread on the BBB bonds