What might be a reason for this?

John is the Security Administrator in his company He installs a new R71 Security Management Server and a new R71 Gateway He now wants to establish SIC between them. After entering the activation key, the message "Trust established" is displayed in SmartDashboard, but SIC still does not seem to work because the policy won’t install and interface fetching still does not work. What might be a reason for this?

A.
This must be a human error.

B.
The Gateway’s time is several days or weeks in the future and the SIC certificate is not yet valid.

C.
SIC does not function over the network.

D.
It always works when the trust is established.