A.CH2=CHCH=CH2 B.CH3CH=CHCH3 C.CH3CH=CHCHO D.CH2=CHCl
A.C(CH3)4 B.CH3CH2CH2CH2CH3 C.(CH3)2CHCH2CH3 D.CH3CH2CH3
A.③>②>①>④ B.①>③>②>④ C.①>②>③>④