A BB rated corporate bond has a yield to maturity of $9\mathrm{.}3\%.$ A US treasury security has a yield to maturity of $7\mathrm{.}4\%.$ These are called as a semi annual compounding. Both bonds pay semi annual coupons at a rate of $7\mathrm{.}9\%$ and have five years to maturity.

a$.$What is the price $($mark expressed as a percentage of the face value$)$ of the treasury bond?

B$.$ What is the price $($expressed as a percentage of

C$.$ What is the credit spread on the capital BBB bond?the face value$)$ on the BBB bonds?