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': 'Treatment of choice for fracture neck of humerus in a 70 year old male: \nSelect and explain. \nA. Analgesic with arm sling, B. U-slab, C. Ahroplasty, D. Open reduction - Internal fixation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Analgesic with arm sling', 'role': 'assistant'}]