This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
All of the following are true about the papovavirus except : 
Select and explain. 
A. They are non-enveloped icosahedral viruses, B. Produce papilloma, C. RNA virus, D. SV-40 is oncogenic
C: RNA virus
Answer: C: RNA virus 
Explanation: Papova virus are non enveloped; Icosahedral human virus containing Ds DNA as genetic material.
Family Papova virus contain 2 generas :

Papilloma virus – Contain humans and animal papilloma virus
Polyoma virus – Contain SV-40 polyoma viruses

Other papova virus are :

JC virus – Isolated from patient of Hodgkin’s disease and progressive multifocal leucoencephalopathy.
BK virus – Isolated from urine of patient with kidney transplant.
SV 40 – Produce malignant tumors when inoculated into new born mice or hamsters.