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
Pylorus preventing pancreatico duodenectomy - Structure preserved 
Select and explain. 
A. Distal stomach, B. Gall bladder, C. Bile duct, D. Head of pancreas
A: Distal stomach
Answer: A: Distal stomach 
Explanation: Ans. (a) Distal StomachRef: Sabiston 20th ed; pg. 1549* Whipple's Pancreatico Duodenectomy Procedure is the conventional procedure for Cancer head of Pancreas.* This Procedure is modified by Traverso and Longmire - Pylrous Preserving Pancreatico Duodenectomy with advantage of less dumping syndrome and Bile reflux.* The main difference between the conventional and Pylorus preserving is we preserve the distal stomach with pylorus here.