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
All are causes of dynamic intestinal obstruction except 
Select and explain. 
A. Gall stones, B. Intussusception, C. Mesentric vascular occlusion, D. Bands
C: Mesentric vascular occlusion
Answer: C: Mesentric vascular occlusion 
Explanation: None