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
False about Nasopharyngeal carcinoma 
Select and explain. 
A. Rhinolalia clausa, B. Radiotherapy is the main modality of treatment, C. Good prognosis, D. Horner's syndrome
C: Good prognosis
Answer: C: Good prognosis 
Explanation: Has poor prognosis.