This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Cleft lip repair is commonly performed at \nSelect and explain. \nA. 0-3 months, B. 3-6 months, C. 6-9 months, D. 9-12 months', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cleft lip repair is commonly performed between 3 and 6 months of ageCleft palate repair is frequently performed between 6 and 18 monthsRef: Bailey and love pg: 692', 'role': 'assistant'}]