Increasing order of electron withdrawing power of following functional groups is :

a. -CN

b. -COOH

c. $-\mathrm{NO}_2$

d. -I

Given below are two statements :

Statement I : In , the carbocation is stabilised by +R effect of –OCH₃ group.

Statement II : In , the carbanion is stabilised by –R effect of –NO₂ group.

In the light of the above statements, choose the correct answer from the options given below :

In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

For the given molecule, "x", the preferred site for the attack of the electrophile is :