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: Surgery
[{'content': 'Cleft lip repair is usually performed \nSelect and explain. \nA. 3-6 months of age, B. 6-9 months of age, C. 9-12 months of age, D. After one year of age', 'role': 'user'}, {'content': 'Answer: A \nExplanation: There have been many different surgical techniques and sequences advocated in cleft lip and palate management. Cleft lip repair is commonly performed between 3 and 6 months of age, whereas cleft palate repair is frequently performed between 6 and 18 months.', 'role': 'assistant'}]