Which one of the following processes is involved in updating IPS from FortiGuard?

Which one of the following processes is involved in updating IPS from FortiGuard?
A . FortiGate IPS update requests are sent using UDP port 443.
B . Protocol decoder update requests are sent to service. fortiguard.net.
C . IPS signature update requests are sent to update fortiguard.net.
D . IPS engine updates can only be obtained using push updates.

Answer: C