2-Methyl-2-butene reacts with HBr in the presence of peroxide to give
(a) A primary alkyl bromide
(b) A secondary alkyl bromide
(c) A tertiary alkyl bromide
(d) A vicinal dibromide
(a) A primary alkyl bromide
(b) A secondary alkyl bromide
(c) A tertiary alkyl bromide
(d) A vicinal dibromide