This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antibiotics, Subject name: Pharmacology
[{'content': 'Most potent fluoroquinolone against Mycobacterium leprae is? \nSelect and explain. \nA. Levofloxacin, B. Ofloxacin, C. Moxifloxacin, D. Ciprofloxacin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ofloxacin when used as monotherapy in leprosy which kills 99% bacteria in 3 weeks.Ref: Sharma and Sharma 2nd e/pg 763', 'role': 'assistant'}]