An alkyl bromide produces a single alkene when it reacts with sodium ethoxide and ethanol. This alkene undergoes hydrogenation and produces 2- methylbutane. What is the identify of the alkyl bromide?
(a) 1-bromobutane
(b) 1-bromo- 2-methylbutane
(c) 2 -bromo-2-methylbutane
(d) 1-bromo-2, 2-dimethylpropane