This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'All are true about Vitamin B12,except ? \nSelect and explain. \nA. Active form is methylcobalamine, B. Requires for conversion of homocysteine to methionine, C. Requires in metabolism of methylmalonyl CoA, D. Requires for conversion of pyruvate to lactate', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is'd' i.e., Requires for conversion of pyruvate to lactate", 'role': 'assistant'}]