$A$ nucleotide has three chemically distinct compounds. These are $A, B$ and $C$. Identify them.

• A
  $A$ - Sugar,$B$ - Carbonates,$C$ - Chlorides
• B
  $A$ - $DNA$,$B$ - Cellulose,$C$ - Chitin
• C
  $A$ - Purine or pyrimidine,$B$ - Monosaccharide,$C$ - Phosphate
• D
  $A$ - Phosphoric acid,$B$ - Proteins,$C$ - Acids