KSH -> P should be (a) (b)

Alkyl halides (2o and 3o) are reduced by sodium borohydride 122. Elimination of bromine from 2-bromobutane results in the formation of (a) predominantly 2-butyne (b) predominantly 1-butene (c) predominantly 2-butene (d) equimolar mixture of 1 and 2-butene If the bromine is attached to the terminal carbon atom, then there is the formation of only one alkene. But if, the bromine is attached at the carbon atom other than the terminal carbon atom, then there will be the formation of more than one alkene, so the major alkene will be the alkene with more substitution or lesser number of hydrogen. So