Identify $A$ in the following reaction:
$C_6H_{12}O_6 \xrightarrow{\text{dil. } HNO_3} A$

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. $\alpha$-Glucose and $\alpha$-Galactose	$I$. Functional isomers
$B$. $\alpha$-Glucose and $\beta$-Glucose	$II$. Homologous
$C$. $\alpha$-Glucose and $\alpha$-Fructose	$III$. Anomers
$D$. $\alpha$-Glucose and $\alpha$-Ribose	$IV$. Epimers

Choose the correct answer from the options given below:

Aldopentoses named as ribose and $2-$deoxyribose are found in nucleic acids. What is their relative configuration?

Maltose contains how many oxygen atoms?

What is the monomer of cellulose?

Assertion $(A)$: Both Glucose and Fructose have the same $D$-configuration.
Reason $(R)$: Both Glucose and Fructose are dextrorotatory.
The correct option among the following is: