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
Surgery for undescended testis is best performed before what age: 
Select and explain. 
A. Just after bih, B. 6 months of age, C. 12 months of age, D. 24 months of age
C: 12 months of age
Answer: C: 12 months of age 
Explanation: Undescended testis (cryptochidism) is usually operated after the age of 1 year. There is high chance of testis desend between age of 3-6 months on its own. So it better to do surgery after 1 year of age. Ref: Handbook of Pediatric Urology By Laurence S. Baskin, Barry A. Kogan, 2nd Edition, Page 26