$A$ virus is considered a living organism and an obligate parasite when inside a host cell. However,viruses are not classified along with bacteria or fungi. What are the characteristics of a virus that are similar to non-living objects?

• A
  They possess a complex cellular organization.
• B
  They can replicate independently outside a host.
• C
  They have an inert crystalline structure outside a living cell.
• D
  They contain both $DNA$ and $RNA$ as genetic material.