This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mycobacterial Diseases (TB, Leprosy and MAC), Subject name: Pharmacology
[{'content': 'Which fluoroquinolone is highly active against Mycobacterium leprae and is being used in alternative multidrug therapy regimens: \nSelect and explain. \nA. Norfloxacin, B. Ofloxacin, C. Ciprofloxacin, D. Lomefloxacin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ofloxacin is highly active against Mycobacterium leprae and is being used in alternative multidrug therapy regimens. As a component of MDT, it has been found to hasten the bacteriological and clinical response. Drugs used for drug resistant leprosy are: Ofloxacin Minocycline Claihromycin', 'role': 'assistant'}]