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
[{'content': 'Gangrene of intestine is seen in all the following conditions, except \nSelect and explain. \nA. Tricuspid Valve Endocarditis, B. Shock, C. Mesenteric Artery Thrombosis, D. Volvulus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Shock, mesenteric artery thrombosis and volvulus can lead to gangrene of intestine.', 'role': 'assistant'}]