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': 'True about saphenous vein \nSelect and explain. \nA. 1cm anterior to medial malleolus process, B. 1cm inferior to medial malleolus process, C. 1cm posterior medial malleolus process, D. 1cm superior to medial malleolus process', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]