This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health programmes in India, Subject name: Social & Preventive Medicine
[{'content': 'Under the DOTS strategy of Revised National Tuberculosis Programme, the recommended line of management is category I patients, if the sputum is positive after 2 months of intensive phase treatment with 4 drugs, is to - \nSelect and explain. \nA. Sta the continuation phase of treatment with INH and rifampicin, B. Continue the intensive phase of treatment with 4 drugs for 1 more month only, regardless of sputum positivity after that, C. Continue the intensive phase of treatment with 4 drugs until the sputum becomes negative, D. Add one more drug, that is, to use 5 drugs until the sputum becomes negative', 'role': 'user'}, {'content': 'Answer: B \nExplanation: <p> Continue intensive phase for 1 month with 4 drugs. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:188 <\\p>', 'role': 'assistant'}]