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