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: Medicine
[{'content': 'Which of the following is an indication of urgent ERCP in pancreatitis? \nSelect and explain. \nA. Acute alcoholic pancreatitis, B. Acute necrotising pancreatitis, C. Acute biliary pancreatitis with cholangitis, D. Chronic calcific pancreatitis with pseudocyst', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Urgent ERCP is indicated in patients who have severe acute biliary pancreatitis with cholangitis. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 2640', 'role': 'assistant'}]