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 best responds to sympathectomy - \nSelect and explain. \nA. Buerger's disease, B. Hyperhydrosis, C. Raynaud' s disease, D. Acrocyanosis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]