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': 'One of the following is not indicated for aerial leg ulcer - \nSelect and explain. \nA. Debridement, B. Elevation of limb, C. Head end of bed is raised, D. Low dose aspirin', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Elevation of limb Elevation of limb will reduce the blood supply", 'role': 'assistant'}]