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': "Kocher's manuever means - \nSelect and explain. \nA. Mobilisation of gall bladder during holecystectomy, B. Mobilisation of 2nd pa of duodenum, C. Mobilisation of pancreas during pancreatectomy, D. Mobilisation of ascending colon", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Mobilisation of 2nd pa of duodenum", 'role': 'assistant'}]