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
. Most common post operative complication of ileo anal pouch anastomosis in ulcerative colitis is: 
Select and explain. 
A. Pouchitis, B. Pelvic abscess, C. Small bowel obstruction, D. Perianal complication
A: Pouchitis
Answer: A: Pouchitis 
Explanation: None