This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Osteoarthritis, Subject name: Medicine
[{'content': 'CRP increases in all EXCEPT: \nSelect and explain. \nA. Osteoarthritis, B. Rheumatoid arthritis, C. Reactive arthritis, D. Psoriatic arthritis', 'role': 'user'}, {'content': "Answer: A \nExplanation: ANSWER: (A) OsteoarthritisREF: Harrison's 17th ed chapter 325CRP raisedCRP not raisedChronic inflammatorv arthritisChronic non inflammatory arthritis* Pauciarticular JRA* Osteoathrtis* Reactive arthritis* Osteonecrosis* Psoriatic arthritis* Charcot's arthritis* Rheumatoid arthritis", 'role': 'assistant'}]