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
The treatment of choice in annular pancreas is which of the following? 
Select and explain. 
A. Whipple's operation, B. Duodeno-jejunostomy, C. Gastro-jejunostomy, D. Jejuno-cystostomy
B: Duodeno-jejunostomy
Answer: B: Duodeno-jejunostomy 
Explanation: Duodeno-Duodenostomy is also done in treatment of annular pancreas.