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': '65 year old man presented with fracture neck femur 3 days after injury , treatment of choice is : \nSelect and explain. \nA. Multiple screw fixation, B. Mc-Murray osteotomy, C. Hemi-ahroplasty, D. Total hip replacement', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Hemi ahroplasty', 'role': 'assistant'}]