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': 'What is the recommended drug for treatment of leptospirosis? \nSelect and explain. \nA. Penicillin, B. Tetracycline, C. Azithromycin, D. Erythromycin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Penicillin is the drug of choice for treatment of leptospirosis. Tetracycline or doxycycline may also be used. Ref: Park 21st edition, page 267.', 'role': 'assistant'}]