7. Which is the major product for the reaction:

(A) CH3CH2CHCH2Br with CH3 branch
(B) CH3CH2CCH3 with CH3 branch and Br
(C) CH3CHCHCH3 with CH3 branch and Br
(D) BrCH2CH2CHCH3 with CH3 branch

(E) I and IV

烷烴自由基鹵化反應（Radical Ha...