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': 'Croup syndrome is usually caused by- \nSelect and explain. \nA. Rhinoviruses, B. Coxsackie A virus, C. Coxsackie B virus, D. All', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Rhinoviruses Croup (Laryngotracheobronchitis) o Croup is a viral infection of upper respiratory tract. o Children between the age of 1-5 years are affected.", 'role': 'assistant'}]