选C
A：正丁烷 CH3CH2CH2CH3 一氯代产物2种
B.异丁烷CH3-CH（CH3）-CH3 一氯代产物2种
C.CH3-CH（CH3）-CH2-CH3 一氯代产物4种
D.CH3C（CH3）2 一氯代产物1种异戊烷有哪四种1.CH2Cl-CH（CH3）-CH2-CH32.CH3-CCl（CH3）-CH2-CH33.CH3-CH（CH3）-CHCl-CH34.CH3-CH（CH3）-CH2-CH2Cl