Which of the following substituted benzene de | vedclass

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(A) When an electrophile attacks a substituted benzene ring,the orientation is determined by the existing groups.
In $m-$Nitrotoluene,the $-CH_3$ gro

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$m-$Nitrotoluene

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(A) When an electrophile attacks a substituted benzene ring,the orientation is determined by the existing groups.
In $m-$Nitrotoluene,the $-CH_3$ group is $o/p-$directing and the $-NO_2$ group is $m-$directing.
The positions available for electrophilic substitution are the $2, 4,$ and $6$ positions relative to the methyl group.
Due to the directing effects of both groups,substitution at these positions leads to three distinct isomers in significant amounts.
In contrast,$o-$Nitrotoluene and $p-$Nitrotoluene have symmetry that reduces the number of distinct isomers formed,and $2, 4, 6-$Trinitrotoluene is highly deactivated towards electrophilic substitution.

Which of the following substituted benzene derivatives would furnish three isomers in significant amount when one more substituent is introduced:

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