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': 'The most rapidly bactericidal drug for M-Leprae is? \nSelect and explain. \nA. Dapsone, B. Clofazimine, C. Ethionamide, D. Rifampicin', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Rifampicin o Rifampicin is the only drug that is highly bactericidal against M. leprae.", 'role': 'assistant'}]