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: Orthopaedics
[{'content': 'In fracture of femur popliteal artery is damaged by \nSelect and explain. \nA. Upper 1/3rd fragment, B. Middle 1/3rd fragment, C. Distal  1/3rd fragment, D. Popliteal artery is never involved', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]