This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vascular surgery, Subject name: Surgery
[{'content': 'Intermittent claudication is \nSelect and explain. \nA. Pain at rest, B. Pain at first step, C. Pain at exercise, D. Pain on pressure', 'role': 'user'}, {'content': 'Answer: C \nExplanation: . Ans : (c) Pain at exercise Intermittent claudication & rest pain are the cardinal symptoms of Peripheral aerial disease . Intermittent clarification refers to a pain, ache or sense of fatigue that occurs in affected muscle group with EXERCISE, paicularly walking & resolves with rest.', 'role': 'assistant'}]