This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
The following is a single stranded DNA containing virus with no envelope 
Select and explain. 
A. Parvo virus B19, B. Hepatitis A, C. Herpes simplex, D. Human reo virus
A: Parvo virus B19
Answer: A: Parvo virus B19 
Explanation: Parvo-SSDNA with no envelope Hepatitis-SS RNA with no envelope Herpes virus is an enveloped double-stranded DNA containing virus Ref: Baveja 5th ed Pg: 423