please compute the new bonds prices if we assume that the yield in the market increase by .50? also whose the less risky bond and why?

Rob is looking to add debt securities to his all equity portfolio. He comes across the following three bonds Bondo Bond B Bond $1,000 $1,000 $1.000 Face Value S1,017,34 $1,014,25 51,00752 Price 3% 3% Coupon 2.80% 2.80% 2.80 YTM semi-annual semi-annual Frequency years 10 years 8 years 4 Maturity Rob is extremely concerned about the riskiness of these bonds. Advise Rob on which one of the three bonds has the lowest amount of risk