<prompt> All of the following statements about Nasopharyngeal carcinoma are true, exceptBimodal 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>: Radiotherapy: It is the treatment of choice for nasopharyngeal cancer. Stage I and II are treated by radiotherapy alone while stage III and IV require concomitant radiation and chemotherapy or radiation followed by chemotherapy. External beam radiation of 6000-7000 cGy can be delivered by the linear accelerator to the primary and both sides of the neck. More advanced techniques of radiotherapy such as three-dimensional conformal radiotherapy and intensity modulated radiotherapy IM are now being used more and more. Ref: Diseases of Ear, Nose and Throat, P.L Dhingra, 7th edition, page 285 