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 are oncogenic viruses except 
Select and explain. 
A. HBV, B. HPV, C. EBV, D. VZV
D: VZV
Answer: D: VZV 
Explanation: Many viruses have been implicated in the causation of cancers:

A. RNA viruses

All oncogenic RNA viruses belong to family retroviridae (retroviruses).
Important examples are Avian leukosis virus, murine leukosis virus, murine mammary tumor virus, HIV (causing AIDS related malignancies) and Human-T-cell leukemia virus (causing Adult T-cell leukemia).

B. DNA viruses

DNA viruses causing cancers are:

1. Papillomaviridea (HPV): Causes genital tumors, SCC and oropharyngeal carcinoma.
2. Herpesviridae: These viruses are:
i. HSV-2: Causes cervical carcinoma.
ii. EBV: Causes nasopharyngeal carcinoma and Burkitt's lymphoma.
iii. HHV-8: It causes Kaposis sarcoma.
3. Hepadnaviridae (HBV): It causes hepatocellular carcinoma.
4. Flaviviridae (HCV) It causes hepatocellular carcinoma.