<prompt> Regarding testicular tumour, the following are false except -They are commonest malignancy in older manSeminomas are radiosensitiveOnly 25 of Stage 1 teratomas are cured by surgery alone.Chemotherapy rarely produces a cure in those with metastatic disease  <response>: Seminomas are well known to be one of the most radiosensitive tumorsAbout other options Option a : Commonest malignancy in older males is Prostate cancerOption c : Stage I Nonseminomas including teratomas are tt by surgery alone and show a high cure rate 95Option d : Chemotherapy shows a good response in advance stage testicular tumors. 