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': 'Oxidation of lactate to pyruvate requires which vitamin ? \nSelect and explain. \nA. Riboflavin, B. Niacin, C. Folic acid, D. Biotin', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Niacin", 'role': 'assistant'}]