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': 'Hemangioma of the rectum \nSelect and explain. \nA. Common tumor, B. Fatal hemorrhage not seen, C. Ulcerative colitis like symptoms seen, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hemangioma of Rectum: Hemangioma of the rectum is an uncommon cause of serious hemorrhage When localized in the lower pa of the rectum or anal canal, a hemnagioma can be excised When the lesion is diffuse, or lying in the upper pa of the rectum, the symptoms simulate ulcerative colitis Diagnosis is often missed for a long period, or it is mistakenly thought to be carcinoma Selective angiography and embolization may be helpful, but excision of the rectum is sometimes required Ref: Bailey 27th edition Pgno: 1327', 'role': 'assistant'}]