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': 'A 65 year female presents with impacted fracture surgical neck of humerus. Treatment of choice is: \nSelect and explain. \nA. Ahroplasty, B. Arm-Chest strapping, C. Triangular sling, D. Wait and watch', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Triangular sling', 'role': 'assistant'}]