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': 'Enchondroma commonly arises from - \nSelect and explain. \nA. Ribs, B. Vertebra, C. Tibia, D. Phalanges', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The most common site is short tubular bones of hand, i.e., Phalanges (most common) and metatarsals.', 'role': 'assistant'}]