Correct Answer - A
Dichloro butane on boiling with aqueous KOH gives 2-butanone
`underset("2,2-dichlorobutane")(CH_(3)-overset(Cl)overset(|)underset(Cl)underset(|)(C )-CH_(2)CH_(3))+2KOH(aq) underset(-2KCl)rarr CH_(3)-overset(OH)overset(|)underset(OH)underset(|)(C )-CH_(2)CH_(3)rarr CH_(3)-overset(O)overset("||")(C )-CH_(2)-CH_(3)`