The pi electrons in benzene ring are delocalised.

The $\mathrm{IUPAC}$ name of the following compound is

The major product of the following reaction is :

The compounds $\mathrm{A}$ and $\mathrm{B}$ in the following reaction are, respectively:

Given below are two statements, one is labelled as

Assertion A and the other is labelled as Reason R.

Assertion A : Benzene is more stable than hypothetical cyclohexatriene.

Reason R : The delocalized $\mathrm{\pi }$ electron cloud is attracted more strongly by nuclei of carbon atoms.

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

The correct IUPAC name of the following compound is:

The major product of the following reaction is: