In the carbocation, H- shift occurs from $c-2$ to $c-3$ because :
(i) the positive charge developed on $c-2$ is m conjugation with the -OH group.
(ii) also the $CH_3$ group at $c-2$ shows + I effect and stabilized the positive charge.
So, $H\;at\;C-2 $
Hence d is the correct answer.