Which of the following compounds does not undergo the carbylamine reaction?

What is the product of the following reaction?

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Aniline on nitration yields ortho,meta and para nitro derivatives of aniline.
Reason $R$: Nitrating mixture is a strong acidic mixture.
In the light of the above statements,choose the correct answer from the options given below.

Which is the weakest Bronsted base?

The major product in the following reaction sequence is:

The major product $A$ is: