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: Anatomy
[{'content': "Operation for chronic Pancreatitis are the following except \nSelect and explain. \nA. Beger's procedure, B. Longitudinal pancteaticojejunostomy, C. Frey's procedure, D. None", 'role': 'user'}, {'content': "Answer: D \nExplanation: Surgical procedure Drainage Puestow procedure Paington and Rochelle Modification of puestow's procedure Duval procedure Beger's procedure Warren's modification of Beger's procedure Frey's procedure Berne modification Hamburg modification of Frey's Ref: Sabiston 20th edition Pgno :1534", 'role': 'assistant'}]