A given nitrogen-containing aromatic compound A reacts with Sn/HCl, followed by HNO2 to give an unstable compound B. B, on treatment with phenol, forms a beautiful coloured compound C with the molecular formula C12H10N2O. The structure of the compound A is




As we learnt in
Coupling reaction of aromatic diazonium -
Diazonium ions of aromatic amines also undergo coupling reaction with aromatic rings having a strong activating group to form diazo compounds.
- wherein


Option 1)

Incorrect
Option 2)

Correct
Option 3)

Incorrect
Option 4)

Incorrect