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 among the following is not seen in inflammatory ahritis? \nSelect and explain. \nA. Raised ESR, B. Morning stiffness, C. Periaicular osteoporosis, D. New bone formation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: New bone formation i.e osteophyte formation is seen in non inflammatory conditions like osteoahritis. Raised ESR, morning stiffness in and around the joints lasting for more than 30 minutes, periaicular osteoporosis are features of inflammatory ahritis. The joint space narrowing, and marginal erosions are also seen.', 'role': 'assistant'}]