<prompt> All of the following statements about nasopharyngeal carcinoma are true, except:Bimodal age distributionNasopharyngectomy with radical neck dissection is the treatment of choiceIgA antibody to EBV is observedSquamous cell carcinoma is the most common histological subtype  <response>: b Nasopharyngectomy with radical neck dissection is the treatment of choiceRef. Scott Brown, 8th ed., Vol 3; 101The definitive treatment for nasopharyngeal carcinoma and its regional node metastasis is radiotherapy. 