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
All are derived from 1st pharyngeal pouch except: 
Select and explain. 
A. Auditory tube, B. Tympanic antrum, C. Tubotympanic recess, D. Middle ear cavity
C: Tubotympanic recess
Answer: C: Tubotympanic recess 
Explanation: None