Which molecule acts as the energy currency in a living organism?

What is the distance between $H$ and $O$ in the $H_2O$ molecule?

Statement $A$: Large polymeric molecules produced by living organisms have a molecular weight of $10,000 \text{ Daltons}$.
Reason $R$: The valency of carbon is $4$.
Which option is correct for Statement $A$ and Reason $R$?

Various properties of water are due to . . . . . . .

$P$: In vertebrates,about $80\%$ of the total phosphorus is associated with teeth and bones.
$Q$: Phosphorus is a structural component of vitamins like biotin and thiamine.

Select the correct option for the biomolecules found in living organisms.
Classification of biomolecules from a chemical perspective $- P$
Classification of biomolecules from a biological perspective $- Q$

Option	$P$ (Chemical Perspective)	$Q$ (Biological Perspective)
$A$	Aldehydes,ketones,aromatic compounds	Amino acids,nucleotide bases,fatty acids
$B$	Amino acids,nucleotide bases,fatty acids	Aldehydes,ketones,aromatic compounds
$C$	Amino acids,ketones,aromatic compounds	Aldehydes,nucleotide bases,fatty acids
$D$	Aldehydes,nucleotide bases,fatty acids	Amino acids,ketones,aromatic compounds