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
[{'content': "Hyperesthesia over the region of 12th is called \nSelect and explain. \nA. Murphy’s sign, B. Boa's sign, C. Moynihan's sign, D. Aaron's sign", 'role': 'user'}, {'content': "Answer: B \nExplanation: Boa's sign is present in acute cholecystitis", 'role': 'assistant'}]