This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'Radiological Signs of Acute Pancreatitis include the following except \nSelect and explain. \nA. Colon cut-off sign, B. Murphy sign, C. Renal halo sign, D. Sentinel loop sign', 'role': 'user'}, {'content': "Answer: B \nExplanation: Murphy sign A positive Murphy's sign is seen in acute cholecystitis. It is elicited by firmly placing a hand at the costal margin in the right upper abdominal quadrant and asking the patient to breathe deeply. Ref ganong's review of medical physiology 25e p762", 'role': 'assistant'}]