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': 'The most impoant perforator of the Lower limb is between - \nSelect and explain. \nA. Long saphenous and posterior tibial vein, B. Sho saphenous and posterior tibial vein, C. Sho saphenous and popliteal vein, D. Long saphenous and femoral vein', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., Long saphenous and femoral vein", 'role': 'assistant'}]