Click the Exhibit button.
You are working on an entry level model FortiGate that has been configured in flow-based inspection mode with various settings optimized for performance. It appears that the main Internet firewall policy is using the antivirus profile labelled default. Your customer has found that some virus samples are not being caught by the FortiGate.

Referring to the exhibit, what is causing the problem?

A. The set default-db configuration was set to extreme.
B. The set options scan configuration items should have been changed to set options scan avmonitor.

C. The default AV profile was modified to use quick scan-mode.

D. The mobile-malware-db configuration was set to enable.