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': 'Which drug is not included in RNTCP regime for MDR TB ? \nSelect and explain. \nA. Cycloserine, B. Ethionamide, C. Levofloxacin, D. PAS', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., PAS", 'role': 'assistant'}]