This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Risk factor for carcinoma stomach include all of the following, Except: \nSelect and explain. \nA. Blood group A, B. Atrophic Gastrititis, C. Duodenal Peptic ulcer, D. Paial Gastrectomy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Duodenal Peptic ulcer) Gastric adenocarcinoma may be associated with long standing gastric peptic ulcers (small risk) but not with duodenal ulcers. Atrophic gastritis, paial gastrectomy and blood group A have all been included in the list of risk factors for gastric adenocarcinoma.', 'role': 'assistant'}]