This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory Infections, Subject name: Social & Preventive Medicine
[{'content': 'Prolonged treatment with Isoniazid leads to deficiency of- \nSelect and explain. \nA. Pyridoxine, B. Thiamine, C. Pantothenic acid, D. Niacin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Treatment with INH can lead to Pyridoxine deficiency, hence it is given as nutritional prophylaxis alongwith TB treatment.', 'role': 'assistant'}]