This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Surgery
[{'content': "Order of anastomosis in Whipple's procedure: \nSelect and explain. \nA. Pancreaticojejunostomy, gastrojejunostomy, hepaticojejunostomy, B. Hepaticojejunostomy, pancreaticojejunostomy, gastrojejunostomy, C. Gastrojejunostomy, pancreaticojejunostomy, hepaticojejunostomy, D. Pancreaticojejunostomy, hepaticojejunostomy, gastrojejunostomy", 'role': 'user'}, {'content': "Answer: D \nExplanation: Tumor position Procedure Head (malignant) Pylorus preserving Whipple's procedure Head (benign) Enucleation Body & Tail Distal pancreatectomy. Whipple's procedure: Pancreaticojejunostomy, Hepaticojejunostomy Gastrojejunostomy Pylorus preserving Whipple's procedure: Pancreaticojejunostomy, Hepaticojejunostomy, Gastrojejunostomy, Duodenojejunostomy. Maxium risk of leak occurs from Pancreaticojejunostomy > Gastrojejunostomy > Hepaticojejunostomy.", 'role': 'assistant'}]