This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorder of Metabolism & Connective Tissue, Subject name: Medicine
[{'content': 'Brodie Tredelenburg test is done for? \nSelect and explain. \nA. Sapheno-femoral incompetence, B. Deep Vein thrombosis, C. Varicose veins, D. Superficial migratory thrombophlebitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Sapheno-femoral incompetenceRef.: SRB manual of surgery Page 228, 4th editionBrodie-Trendelenburg test is used to detect venous incompetence and to differentiate between perforator and Great saphenous incompetence.', 'role': 'assistant'}]