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': '60 years female with fracture neck of left femur, develops vascular necrosis, which is most probably due to damage of \nSelect and explain. \nA. Retinacular Branches of circum - flex - femoral artery, B. Femoral artery, C. Iliac artery, D. Tibial artery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]