QuestionOrganic / phenonium ion (aryl participation)
Consider the following solvolysis reaction : (where, Z is H or p-Cl or p-Me or p-OMe)

The extent of neighbouring group participation of phenyl group (from lower to higher) follows which one of the following order ?
- (a) H < p-Cl < p-OMe < p-Me
- (b) p-OMe < p-Cl < p-Me < H
- (c) p-Cl < p-Me < H < p-OMe
- (d) p-Cl < H < p-Me < p-OMe
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