An alkane with a molecular formula of C8H18 reacts with chlorine in the presence of light and heat to give a single monochloride C8H17Cl. What is the most reasonable structure for the starting alkane?
a. CH3CH2CH2CH2CH2CH2CH2CH3
b. (CH3CH2)2CHCH2CH2CH3
c. (CH3)3CC(CH3)3
d. (CH3)2CHCH2CH2CH2CH2CH3
e. (CH3)2CHCH2CH2CH(CH3)2