This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Pathology
In gastric outlet obstruction in a peptic ulcer patient, the site of obstruction is most likely to be:- 
Select and explain. 
A. Antrum, B. Duodenum, C. Pylorus, D. Fundus
B: Duodenum
Answer: B: Duodenum 
Explanation: Peptic ulcer disease , Carcinoma of the stomach - can result in Gastric outlet obstruction Peptic ulcer disease, MC site of obstruction - Duodenum Carcinoma of stomach, MC site of obstruction - Pyloric region of stomach - Most common cause of Gastric Outlet Obstruction in adult patient - Carcinoma of the stomach.