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': 'The best time for surgery of hypospadias is - \nSelect and explain. \nA. 1-4 months of age, B. 6-10 months of age, C. 12-18 months of age, D. 2-4 years of age', 'role': 'user'}, {'content': 'Answer: B \nExplanation: "The best time for surgery for hypospadias is between 6-12 months of age" - Cambell\'s Urology', 'role': 'assistant'}]