the biomolecules in List-I are correctly matched to the categories in List-II as follows: (A) Adenine is a Purine, which is one of the two main types of nitrogenous bases found in nucleic acids . (B) Anthocyanin is classified as a Pigment, identified in the sources as a secondary metabolite found in plant cells . (C) Chitin is a complex Polysaccharide that makes up the exoskeletons of arthropods . (D) Codeine is an Alkaloid, which is another category of secondary metabolites listed in the sources .

Mapping these pairs ((A)-(IV), (B)-(I), (C)-(II), (D)-(III)) yields the sequence IV I II III, which corresponds to Option 3.