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': 'Tension band wiring is done for Fracture of: \nSelect and explain. \nA. Humerus, B. Tibia, C. Olecranon, D. Finger', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Olecranon', 'role': 'assistant'}]