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
What is drug of choice in dysentery due to shigella? 
Select and explain. 
A. Doxycycline, B. Ciprofloxacin, C. Tetracycline, D. No antibiotic is recommended
B: Ciprofloxacin
Answer: B: Ciprofloxacin 
Explanation: The drug of choice for shigella is ciprofloxacin. Shigella is usually resistant to ampicillin and cotrimoxazole. Ref: Park 21st edition, page 204.