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': 'The maxillary vein accompanies \nSelect and explain. \nA. First part of maxillary artery., B. Second part of maxillary artery., C. Third part of maxillary artery., D. None.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]