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
CRP increases in all EXCEPT: 
Select and explain. 
A. Osteoarthritis, B. Rheumatoid arthritis, C. Reactive arthritis, D. Psoriatic arthritis
A: Osteoarthritis
Answer: A: Osteoarthritis 
Explanation: 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