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
Treatment of choice for sputum positive pulmonary tuberculosis detected in the I trimester of pregnancy is 
Select and explain. 
A. Defer treatment till II trimester, B. Start Category I immediately, C. Start Category II immediately, D. Start Category III immediately
B: Start Category I immediately
Answer: B: Start Category I immediately 
Explanation: None