This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification and metabolism of amino acids, Subject name: Biochemistry
[{'content': 'Sulphur containing amino acids metabolism needs- \nSelect and explain. \nA. Pyridoxine, B. Folic acid, C. Vitamin B12, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sulphur containing amino acid metabolism requires three vitamins:- 1. Vitamin B6 (Pyridoxine), 2. Vitamin B9 (Folate) 3. Vitamin B12. Folate and vitamin B12 are required for one carbon transfer and Pyridoxine is required in Cystathionine Synthase, which conves Homocysteine to Cystathionine.', 'role': 'assistant'}]