Phenol at $25 \, ^\circ C$ is

Which of the following compounds is obtained when phenol reacts with dilute nitric acid at low temperature?

What is the $IUPAC$ name of the product formed by the oxidation of phenol with chromic acid?

The nitration of phenol with dilute $HNO_3$ at low temperature yields a mixture of two isomers $(A)$ and $(B)$. Product $(A)$ is more volatile than product $(B)$. Identify $(A)$.

Product $(A)$ and $(B)$ respectively are $:-$

$Phenol$ $\xrightarrow[Distillation]{Zn} A$ $\xrightarrow[Conc. H_2SO_4]{Conc. HNO_3} B$ $\xrightarrow[NaOH]{Zn} C$
In the above reaction,$A$,$B$,and $C$ are the following compounds: