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': 'Most common site of admantinoma of the long bones is - \nSelect and explain. \nA. Femur, B. Ulna, C. Tibia, D. Fibula', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ameloblastoma → \xa0Most common site jaw (mandible).\nAmeloblastoma of long bones → Called adamantinoma and is most common in tibial diaphysis.', 'role': 'assistant'}]