The product $(C)$ of the reaction is:

Assertion : Aldol condensation can be catalysed both by acids and bases.
Reason : $\beta$-Hydroxyaldehydes or ketones readily undergo acid-catalysed dehydration.

The product $A$ obtained in the following reaction is:

The tests performed on compound $X$ and their inferences are:

Test	Inference
$(a)$ $2, 4-DNP$ test	Coloured precipitate
$(b)$ Iodoform test	Yellow precipitate
$(c)$ Azo-dye test	No dye formation

Compound $X$ is:

The major product of the following reaction is:

Which of the following compounds does not react with Tollen's reagent?