Correct Answer - A
`{:(CH_(3)-CH_(2)-overset(CH_(3))overset(|)underset(OH)underset(|)(C)-CH_(2)-CH_(3)),(overset(H^(+))toCH_(3)-CH_(2)-overset(CH_(3))overset(|)underset(o+)(C)-CH_(2)-CH_(3)):}`
The more stable carbocation is generated thus more easily it will be dehydrated.