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: Shigella accounts for majority of cases of dysentry.', 'role': 'assistant'}]