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: Surgery
[{'content': 'Bright red blood in stools is suggestive of all except \nSelect and explain. \nA. Hemorrhoids, B. Gastric Ulcer, C. Fistula in Ano, D. Rectal cancer', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Gastric UlcerCauses oflower gi bleed (bright red blood)DiveiculosisCA Colon/RectumAnal FissureAngiodysplasiaHemorrhoidsColonic PolypFistula in ano', 'role': 'assistant'}]