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': 'Treatment of choice for sputum positive pulmonary tuberculosis detected in the I trimester of pregnancy is \nSelect and explain. \nA. Defer treatment till II trimester, B. Start Category I immediately, C. Start Category II immediately, D. Start Category III immediately', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]