Correct Answer - B
`CH_(3) COOC_(2)H_(5) + CH_(3)Mg Br rarr CH_(3) - underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C) - OMg Br + H_(2)O overset("Hydrolysis")rarr underset("tertiary butyl alcohol")(CH_(3) - underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C) - OH) + Mg BrOH`