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': 'Medial Umbilical ligament is a remnant of \nSelect and explain. \nA. Distal part of Umbilical artery, B. Distal part of Umbilical vein, C. Proximal part of Umbilical artery, D. Urachus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Medial Umbilical ligament is a remnant of Distal part of Umbilical artery.\xa0MedianUmbilical ligament is a remnant of Urachus.', 'role': 'assistant'}]