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
Which among the following is not true regarding nasopharyngeal carcinoma - 
Select and explain. 
A. Associated with EBV infection, B. Starts in the fossa of Rosenmuller, C. Radiotherapy is the treatment of choice, D. Adenocarcinoma is usual
D: Adenocarcinoma is usual
Answer: D: Adenocarcinoma is usual 
Explanation: Squamous cell carcinoma in various grades of its differentiation or its variants as transitional cell carcinoma and lymphoepithelioma, is the most common (85%).