Directing nature of substuted aromatic compound is decided by stability of `sigma`-complex is stablise at o- and p- position by attack of electrophile then group is o- and p- directing but if `sigma`-complex is stabilise at m- position then gruop will be meta directing.
On the basis of above explanation find out correct answer of following questions.
Which of the following is not o- and p- directing ?
A.
B.
C.
D.
