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
Cleft lip surgery is earliest done at 
Select and explain. 
A. 3 months, B. 6 months, C. 9 months, D. 12 months
A: 3 months
Answer: A: 3 months 
Explanation: Ref: Sabiston 20th edition Pgno : 1947 "Rule of 10s" by surgeon Wilhelmmensen and Musgrave Surgery is done in cleft lip in a child when Age >= 10 weeks Weight >= 10 pounds Hemoglobin >= 10 gm Management of cleft lip and cleft palate Surgical techniques are aimed at restoring normal anatomy Cleft lip Repaired between 3 and 6 months of age Cleft palate Repaired between 6 and 18 months