This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
[{'content': 'Pierre Robin Sequence includes \nSelect and explain. \nA. Glossoptosis, B. Airway obstructions, C. Cleft lip, D. Micrognathia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pierre robin syndrome includes cleft palate retrognathia posteriorly displaced tongue(glossoptosis) early respiratory and feeding difficulties SRB ,5th,347.', 'role': 'assistant'}]