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
True about diagnosis of pancreatitis is 
Select and explain. 
A. 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
B: CECT is done after 72 hours
Answer: B: CECT is done after 72 hours 
Explanation: CECT is IOC for pancreatitis usually done after 72 hrs to assess severity.