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': 'All of the following structures are passing through the parotid gland except: \nSelect and explain. \nA. External carotid artery., B. Retromandibular vein., C. Facial nerve., D. Internal carotid artery.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]