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': 'Which of the following is the commonest cause of lower GI bleed: \nSelect and explain. \nA. Angiodysplasia, B. Enteric fever, C. Diveiculosis, D. Hemorrhoids', 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer is D (Hemorrhoids) 'Hemorrhoids are probably the most common cause of Lower GIBleed (LGIB)'", 'role': 'assistant'}]