This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
[{'content': 'Which of the following passes between base of the skull & superior constricter muscle? \nSelect and explain. \nA. Eustachion tube, levator palatine muscle, ascending palatine aery, B. Maxillery nerve & levator palatine muscle, C. Eustachion tube & stylopharyngeous muscle, D. Ascending palatine aery & Glassopharyngeal nerve', 'role': 'user'}, {'content': "Answer: A \nExplanation: The large gap between the upper concave border of the superior constrictor and the base of the skull is semilunar and is known as the sinus of Morgagni. It is closed by the upper strong pa of the pharyngobasilar fascia. The structures passing through this gap are: (a) The auditory tube; (b) the levator veli palatini muscle; and (c) the ascending palatine aery. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3, 6th edition", 'role': 'assistant'}]