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': 'Long bone fixation done with: \nSelect and explain. \nA. Intramedullary Nail, B. Compression plate, C. External fixation, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Intramedullary nail; B i.e. Compression plate; C i.e. External fixator', 'role': 'assistant'}]