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: Microbiology
[{'content': 'Which of the following microbes is the most common cause of gastroenteritis in children? \nSelect and explain. \nA. Reoviruses., B. Picornaviruses., C. Togaviruses., D. Paramyxoviruses.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most common cause of gastroenteritis in children is the rotavirus. It is found in the reovirus family.', 'role': 'assistant'}]