This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': "Cullen's sign \nSelect and explain. \nA. Bluish disclolouration of the flanks, B. Bluish discolouration in the umbilicus, C. Migratory thrombophelebitis, D. Subcutaneous fat necrosis", 'role': 'user'}, {'content': "Answer: B \nExplanation: Cullen's sign seen in acute pancreatitis due to enzymes seeping through falciform ligament and causing discolouration around umbilicus SRB,5th,683.", 'role': 'assistant'}]