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': 'The most common complication of supracondylar fracture is \nSelect and explain. \nA. Osteosarcoma, B. Genu valgum, C. Blood vessel injury, D. Malunion with gun stock deformity', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Malunion with gunstock deformity', 'role': 'assistant'}]