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: Anatomy
[{'content': 'Sho saphenous vein is a tributary of \nSelect and explain. \nA. Lateral marginal vein, B. Posterior tibial vein, C. Medial marginal vein, D. Dorsal venous arch', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Posterior tibial vein', 'role': 'assistant'}]