For the following reaction sequence, choose the correct option

If P is the sodium salt of a carboxylic acid, $\displaystyle \mathbf{Q}$ is a primary alcohol.

P and Q are aromatic compounds.

If P gives a carboxylic acid on acidification, $\displaystyle \mathbf{Q}$ gives a poisonous gas on exposure to air and light.

Both P and Q are carbonyl compounds.