A user says: 'My firewall is on, so I don't need antivirus.' Why is this wrong?

• AAntivirus only protects against firewalls.
• BFirewalls automatically install antivirus on every device.
• CFirewalls filter traffic but cannot remove malware that arrives via allowed channels like email attachments.
• DFirewalls are illegal without antivirus.

Choose an answer — or press 1234