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 are derived from 1st pharyngeal pouch except: \nSelect and explain. \nA. Auditory tube, B. Tympanic antrum, C. Tubotympanic recess, D. Middle ear cavity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]