This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Testis and scrotum, Subject name: Surgery
[{'content': 'Best time for surgery of Undescended testis is: \nSelect and explain. \nA. Just after bih, B. 6 months of age, C. 12 months of age, D. 24 months of age', 'role': 'user'}, {'content': "Answer: B \nExplanation: Management: Orchidopexy, Ideal time: 6-12 months of age. (Best time is 6 months) Types of Orchiopexy 1. Fowler-Stephens orchidopexy 2. Microvascular testicular autotransplanatation (Best results) 3. Ladd and Gross orchidopexy 4. Ombridanne's orchidopexy 5. Placing testis in Daos pouch 6. Keetley-Torek orchidopexy Diagnostic Laparoscopy IOC for 'non-palpable' UDT. Vas and testicular aery is traced in Pelvis. Blind ended Vas doesn't conclude the absence of testis, whereas Blind ended testicular aery is a definitive investigation for an absence of testis. Laparoscopy is also useful in lap. Assisted orchidopexy", 'role': 'assistant'}]