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': 'All of the following are seen in deep vein thrombosis except \nSelect and explain. \nA. Pain, B. Discolouration, C. Swelling, D. Claudication', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Claudication occurs in arterial occlusion', 'role': 'assistant'}]