What type of virus is the smallpox virus?

Explanation

Viruses are classified by genome type and presence of an envelope. RNA-enveloped viruses (e.g., influenza, HIV) have RNA with a capsid and lipid coat, while RNA-non-enveloped viruses (e.g., polio, rotavirus) carry RNA only in a capsid. DNA-enveloped viruses (e.g., herpes, hepatitis B, and poxvirus) contain a large double-stranded DNA genome with both capsid and envelope, whereas DNA-non-enveloped viruses (e.g., adenovirus and papillomavirus) package DNA only in a protein shell. Notably, the poxvirus is a DNA-enveloped virus.