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: ENT
[{'content': 'Herpangina is caused by the virus - \nSelect and explain. \nA. Group A Coxsackie, B. Group B Coxsackie, C. Measles, D. Adenovirus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]