MCQ
Here, $A$ and $B$ respectively are :-


- Apropene and methanal
- Bpropane and ethanal
- Cpropene and ethanol
- ✓propene and ethanal

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$STATEMENT-2$: The colour of the compound formed in the reaction of aniline with $\mathrm{NaNO}_2 / \mathrm{HCl}$ at $0^{\circ} \mathrm{C}$ followed by coupling with $\beta$-naphthol is due to the extended conjugation.
