<prompt> Which off the following is an oncogenic retrovirus?HTLV-1HPVEBVHBV  <response>: Ans: A HTLV-1 Ref: Jawetz, Mel nick Adel bergs Textbook of Medical Microbiology, 25th Edition. 2010Explanation: Viruses which produce tumors in either their natural host or experimental animals or induce malignant transformation in cell cultures are called oncogenic viruses.RNA virusesCANCERHCVHTLV1HIVHepatocellular cancerAdult T cell leukemiaAIDS related malignanciesDNA virusesCANCERHPVGenital tumoursOropharyngeal cancerBurkitts lymphomaNasopharyngeal carcinomaB cell lymphomaKaposis sarcomaHepatocellular cancerEBVHHV 8HBV 