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': 'Most common cause of Acute epiglottis is \nSelect and explain. \nA. Respiratory Syncytial Virus, B. Parainfluenza virus, C. Hemophilius influenza A, D. Hemophilius influenza B', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Most common cause of Acute epiglottis is Hemophilius influenza B', 'role': 'assistant'}]