"Computer networks are immune from computer viruses only if they're completely isolated from other machines and stray software. So, as I told you, this network is not safe from viruses. This network is not completely isolated from other machines and stray software."

Diagram the above argument using the Arrow Diagramming method and answer the following question:

Which statement best represents the conclusion of this argument?

Computer networks are immune from computer viruses only if they're completely isolated from other machines and stray software.

This network is not safe from viruses.

This network is not completely isolated from other machines and stray software.

This is not an argument.