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': 'Gunstock deformity is due to \nSelect and explain. \nA. Fracture of 1st metacarpal bone, B. Fracture of lower end of radius, C. Supracondylar fracture of humerus, D. Lateral condylar fracture of humerus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Supracondylar fracture humerus', 'role': 'assistant'}]