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
'Saw tooth' appearance on barium enema may be seen in: March 2004 
Select and explain. 
A. Diveicular disease of colon, B. Carcinoma colon, C. Colitis, D. Polyps
A: Diveicular disease of colon
Answer: A: Diveicular disease of colon 
Explanation: Ans. A i.e. Diveicular disease of colon