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': 'Herpangina is caused by ? \nSelect and explain. \nA. Enterovirus, B. Rhinoviruses, C. Myxovirus, D. Rabies virus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Enterovirus", 'role': 'assistant'}]