This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intestinal Obstruction, Subject name: Surgery
Most common site of volvulus is: 
Select and explain. 
A. Ileum, B. Appendix, C. Sigmoid colon, D. Caecum
C: Sigmoid colon
Answer: C: Sigmoid colon 
Explanation: Ans. (c) Sigmoid colon