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': 'Treatment of annular pancreas is - \nSelect and explain. \nA. Conservative, B. Gastrojejunostomy, C. Duodenoduodenostomy, D. Removal of compressing part of pancreas', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]