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
Treatment of nasopharyngeal carcinoma T1 - 
Select and explain. 
A. Radiation therapy, B. Surgery, C. Local resection, D. Chemotherapy
A: Radiation therapy
Answer: A: Radiation therapy 
Explanation: Overall treatment of choice for nasopharyngeal carcinoma → radiotherapy.
Treatment of choice for early (stage I & II) nasopharyngeal carcinoma → radiotherapy.
Treatment of choice for advanced (stage III & IV) nasopharyngeal carcinoma → radiotherapy combined with chemotherapy.