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': 'Raynaud’s syndrome occurs in all of the following except: \nSelect and explain. \nA. SLE, B. Rheumatoid arthritis, C. Osteoarthritis, D. Cryoglobulinemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]