NEET 2023 Biology question

Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?

• (A)Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
• (B)Recombinant DNA Technology
• (C)Serum and Urine analysisCorrect
• (D)Polymerase Chain Reaction (PCR) technique