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 –a)  Rhinovirusesb)  Coxsackie A virusc) Coxsackie B virusd) Para influenza \nSelect and explain. \nA. b, B. c, C. ac, D. ad', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Croup (Laryngotracheobronchitis)\n\nCroup is a viral infection of the upper respiratory tract.\nChildren between the age of 1-5 years are affected.\n\nCausative organisms → Parainfluenza type I, RSV, Influenza, Adenovirus, Rhinovirus', 'role': 'assistant'}]