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': 'Daily dose of INH for TB ? \nSelect and explain. \nA. 600 mg, B. 300 mg, C. 150 mg, D. 1500 mg', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 300 mg", 'role': 'assistant'}]