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: ENT
The most common site for nasopharyngeal carcinoma - 
Select and explain. 
A. Nasal septum, B. Fossa of rosenmuller, C. Vault of nasopharynx, D. Antero-superior wall
B: Fossa of rosenmuller
Answer: B: Fossa of rosenmuller 
Explanation: The commonest site of origin of nasopharyngeal carcinoma is fossa of Rosenmuller in the lateral wall of the nasopharynx.