Which of the following minor products could NOT arise from the halogenation rxn below?
2-methylpropane + Br2 -> 1-bromo-2-methylpropane + HBr + minor products
a) 2,5-dimethyl hexane
b) 2-bromo-2-methylpropane
c) 1,3-dibromo-2-methylpropane
d) 2,4-dimethylhexane
e) 2,2,4 trimethylpentane