A.8 B.2 C.1/2 D.1/8
A.8 , 362.5 ,3262.5 B.9 , 362.5 ,3262.5 C.8 , 352.5 ,3162.5 D.9 , 352.5 ,3162.5
A.CH3CHO B.CH3CH2OH C.C4H10 D.C6H5Cl