Which of the following additions would complete the Rule Base Configuration?

Exhibit:

The Rule Base shown below is installed on the NOC firewall at the MSP: If the Administrator intended to install licenses on remote security Gateways by using SmartUpdate, this Rule Base is incomplete. Which of the following additions would complete the Rule Base Configuration?

A.
Create a Rule allowing the Primary and Secondary MDS Machine located at the NOC to connect to each other

B.
Create a Rule allowing the remote Gateways access to the MDS

C.
Create a Rule allowing the remote Gateways access to the NOC Firewall

D.
Create a Rule that allows the remote Gateways access to the CMAs

E.
The MDS must be added to the Source column of the CMAs-to-Security Gateway Rule