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': 'Which of the following passes between base of the skull and superior constrictor muscle? \nSelect and explain. \nA. Eustachian tube, levator palatini muscle, ascending palatine artery, B. Maxillary nerve and levator palatine muscle, C. Eustachian tube and stylopharyngeus muscle, D. Ascending palatine artery and glossopharyngeal nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Between base of the skull and superior constrictor muscle lies the Morgagni sinus, through which passes the auditory tube, levator\xa0palati muscle, ascending palatine artery and palatine branch of the ascending pharyngeal artery.', 'role': 'assistant'}]