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
Commonest site for colonic diverticula is- 
Select and explain. 
A. Ascending colon, B. Sigmoid colon, C. Transverse colon, D. Descending colon
B: Sigmoid colon
Answer: B: Sigmoid colon 
Explanation: None