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: Medicine
[{'content': 'Joint which is usually spared in Osteoarthritis \nSelect and explain. \nA. Knee Joint, B. PIP, C. DIP, D. Wrist Joint', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Joint spared in Osteoarthritis:\n\nWrist, Elbow, Ankle.\nMetacarpo phalangeal joints.\nCarpometacarpal joints (except base of thumb).', 'role': 'assistant'}]