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: Social & Preventive Medicine
[{'content': 'A patient of pulmonary tuberculosis was put on anti-tuberculosis therapy. He was given Rifampicin, INH, Ethambutol and Pyrazinamide He should be advised to have a supplement of \nSelect and explain. \nA. Niacin, B. Riboflavin, C. Pyridoxine, D. Thiamine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]