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: Pediatrics
[{'content': 'Most common cause of dysentery is - \nSelect and explain. \nA. Shigella dysentrie, B. E. Histolytica, C. Salmonella, D. Compylobacter', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Shigella dysentrie Shigella accounts for majority of cases of dysentry.", 'role': 'assistant'}]