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: Pharmacology
[{'content': 'Which of the following drug is not used in the treatment of leprosy? \nSelect and explain. \nA. Rifampicin, B. Dapsone, C. Kanamycin, D. Clofazimine', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Kanamycin", 'role': 'assistant'}]