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': 'Duval procedure in case of chronic pancreatitis involves \nSelect and explain. \nA. Distal resection of tail of pancreas with end to end pancteaticojejunostomy, B. Distal resection of tail of pancreas with longitudinal opening of duct and pancteaticojejunostomy, C. Duodenum preserving pancreatic head resection, D. Local section of pancreatic head with longitudinal pancteaticojejunostomy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Surgical procedures in chronic pancreatitis Drainage procedure Duval procedure : Distal pancreatictomy with Roux-en-Y pancteaticojejunostomy (caudal PJ) Ref: Sabiston 20th edition Pgno : 1535', 'role': 'assistant'}]