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': 'True about diagnosis of pancreatitis is \nSelect and explain. \nA. Serum lipase in investigation of choice, B. CECT is done after 72 hours, C. RANSON’s score of more than 2 is acute severe pancreatitis, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: CECT is IOC for pancreatitis usually done after 72 hrs to assess severity.', 'role': 'assistant'}]