This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cleft Lip & Palate, Subject name: Surgery
[{'content': 'Ideal time for surgery in case of unilateral cleft lip? \nSelect and explain. \nA. <3 months, B. 3 to 6 months, C. 6 to 9 months, D. >12 months', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b (3 to 6 months) (Ref. Bailey and Love 26th/pg.637).Timing of primary cleft lip and palate procedures.Cleft lip aloneUnilateral (one side)Bilateral (both sides)One operation at 5-6 monthsOne operation at 4-5 months Cleft palate aloneSoft palate onlySoft and hard palateOne operation at 6 months two operationsSoft palate at 6 monthsHard palate at 15-18 monthsCleft lip and palateUnilateralTwo operationsCleft lip and soft palate at 5-6 monthsHard palate and gum pad with or without lip revisionat 15-18 monthsBilateralTwo operationsCleft lip and soft palate at 4-5 monthsHard palate and gum pad with or without lip revisionat 15-18 months', 'role': 'assistant'}]