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: Radiology
[{'content': 'Colon cut off sign seen in – \nSelect and explain. \nA. Acute pancreatitis, B. Diverculities, C. Appendicitis, D. Carcinoma colon', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Colon cut off sign is seen in acute pancreatitis.', 'role': 'assistant'}]