An analyst notes that the yield on a 10-year corporate bond is 7.32% and the yield on a 10-year government bond is 5.60%. The relative yield spread and yield ratio, respectively, for the two bonds are closest to:
　　Relative yield spread 　　Yield ratio

A.30.7%　　　　　　　　　0.68

B.30.7%　　　　　　　　　1.31

C.46.4%　　　　　　　　　0.68