This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Surgery
[{'content': 'Cullen sign is: \nSelect and explain. \nA. Around umbilicus, B. In the flanks, C. In the epigastrium, D. In the back', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a (Around the umbilicus) Ref:Bailey, 24th ed, p. 1124(Discussed earlier) Cullen sign is seen in acute pancreatitis around the umbilicus.Grey turners sign is seen in the flanks.', 'role': 'assistant'}]