When investigating FortiGuard connectivity issues, which of the following is a valid troubleshooting step?

When investigating FortiGuard connectivity issues, which of the following is a valid troubleshooting step?
A . Verify management VDOM’s internet access.
B . Verify DNS requests are being proxied if auto-update tunneling is enabled.
C . Use the FortiGuard real-time debug command to verify rating requests.
D . Configure a virtual IP to forward port 443 to FortiGate’s external IP.

Answer: A