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: Gynaecology & Obstetrics
[{'content': 'Pierre robin syndrome is a \nSelect and explain. \nA. Deformation, B. Malformation, C. Disruption, D. Sequence', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sequence describes anomalies that all develop sequentially from one insult.\nPierre robin sequence. Micrognathia\xa0→ glossoptosis\xa0→ cleft palate.', 'role': 'assistant'}]