The reactivity of compound Z with different hologens under appropriate conditions is given below:The observed pattern of electrophilic substitution cannot be explained by

(I), (II) and (III) are probable positions as per electronic effect of OH group where electrophile can attack and due to steric hindrance at (II) and (III) positions bulky electrophiles are not preferred like I only preferred at position I, Bromine at positions II and I is while chlorine at all three positions.