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
Drug of choice for treatment of leptospirosis is: 
Select and explain. 
A. Penicillin, B. Ampicillin, C. Tetracycline, D. Doxycycline
A: Penicillin
Answer: A: Penicillin 
Explanation: Penicillin is the drug of choice for treatment of leptospirosis. Other drugs used are tetracycline and doxycycline. Ref: Park 21st edition, page 267.