Which statement is correct regarding virus scanning on a FortiGate unit?
A. Virus scanning is enabled by default.
B. Fortinet Customer Support enables virus scanning remotely for you.
C. Virus scanning must be enabled in a UTM security profile and the UTM security profile must be assigned to a firewall policy.
D. Enabling virus scanning in a UTM security profile enables virus scanning for all traffic flowing through the FortiGate device.