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: Orthopaedics
[{'content': "Heberden's Arthropathy affects - \nSelect and explain. \nA. Lumbar spine, B. Symmetrically large joints, C. Sacroiliac joints, D. Distal interphalangeal joints", 'role': 'user'}, {'content': "Answer: D \nExplanation: In osteoarthritis of hand :\n\ni)\xa0\xa0 Distal interphalangeal joint :- Heberden's node.\nii)\xa0 Proximal interphalangeal joint :- Bouchard's node", 'role': 'assistant'}]