This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
True about small bowel diveicula 
Select and explain. 
A. Contains all the layers of bowel wall, B. Seen in terminal ileum, C. Radiographically not visualized, D. Surgical treatment is not required
A: Contains all the layers of bowel wall
Answer: A: Contains all the layers of bowel wall 
Explanation: .Eighty percent of intestinal obstruction occurs in small bowel; 20% in colon. 70% of colonic obstruction is due to malignancy. Other 30% is due to volvulus; divei-culitis, inflammatory cause like tuberculosis, etc.small bowel diveicula usually contains all layers of bowel wall. ref:SRB's manual of surgery,ed 5,pg no 888