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
Structures passing through palato vaginal canal are all except 
Select and explain. 
A. Pharyngeal branch of pterygo palatine ganglion., B. Pharyngeal branch of maxillary artery., C. Branches of pharyngeal nerves and vessels., D. None.
C: Branches of pharyngeal nerves and vessels.
Answer: C: Branches of pharyngeal nerves and vessels. 
Explanation: None