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': 'The following is not a feature of Pierre – Robin syndrome – \nSelect and explain. \nA. Hearing defect, B. Coloboma Iris, C. Respiratory distress, D. Mandibular hypoplasia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pierre Robin syndrome consists of -\n\nMicrognathia\nThe foreshortened floor of mouth\nCHDs\nCleft palate or high arched palate\nMandibular hypoplasia (Micrognathia)\xa0\nRespiratory obstruction\nNormal size tongue', 'role': 'assistant'}]