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: Surgery
[{'content': 'H. pylori has been implicated in all, except \nSelect and explain. \nA. Gastric ulcer, B. Gastric carcinoma, C. Gastric lymphoma, D. GIST', 'role': 'user'}, {'content': 'Answer: D \nExplanation: H pylori infection is almost always present in the setting of active chronic gastritis and is present in most patients with duodenal (80% to 95%) and gastric (60% to 90%)ulcers. Most patients with gastric cancer have current or past H. pylori infection.There is also a strong association between mucosa-associated lymphoid tissue (MALT)lymphoma and H. pylori infection.Sabiston 20e pg: 1223', 'role': 'assistant'}]