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
Testicular cancer is common in 
Select and explain. 
A. Ectopic testis, B. Undescended abdominal testis, C. Atrophic testis, D. Anteverted testis
B: Undescended abdominal testis
Answer: B: Undescended abdominal testis 
Explanation: None