Integrate your knowledge of B vitamin coenzymes: which set of vitamins provides cofactors required for transamination (amino acid interconversion), one-carbon transfers for nucleotide synthesis, and methylation reactions important in DNA synthesis?

• A. Riboflavin (B2) for transamination, pantothenic acid (B5) for one-carbon transfers, and niacin (B3) for DNA methylation.
• B. Thiamine (B1) for methylation, biotin (B7) for nucleotide synthesis, and vitamin C for transamination reactions.
• C. Vitamin B6 for transamination, folate (B9) for one-carbon transfers and nucleotide synthesis, and vitamin B12 for methylation reactions in DNA synthesis.
• D. Pantothenic acid (B5) for transamination, niacin (B3) for one-carbon transfers, and riboflavin (B2) for methylation reactions.

Answer: (C)