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': 'Intermittent claudication is caused by \nSelect and explain. \nA. Venous occlusion, B. Arterial insufficiency, C. Neural compression, D. Muscular dystrophy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]