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': 'Which of the following describes stage 3 Limb ischemia as per Fontaine classification \nSelect and explain. \nA. Well compensated intermittent claudication, B. Poorly compensated intermittent claudication, C. Rest pain, D. Ischemic ulcer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Fontaine classification of limb ischaemia :\n\nStage 1 : No clinical symptoms.\nStage 2 : Intermittent claudication.\n\n2a : Well - compensated\xa0 - Can walk > 200 metres.\n2b : Poorly compensated - Walk only < 200 metres.\n\nStage 3 : Rest pain.\nStage 4 : Gangrene, ischaemic ulcer.', 'role': 'assistant'}]