You are contacted by your customer who has deployed a Cisco Unified CallManager cluster. They received an e-mail warning about a critical Microsoft operating system vulnerability that may impact their Cisco Unified CallManager cluster. What should you tell the customer to do about this e-mail warning?

A.
Verify that the latest Microsoft and Cisco operating system patches have been applied to the cluster and then go to both Cisco and Microsoft and download and apply the patches that are specific to the latest vulnerability.

B.
Verify the latest Cisco operating system patches have been applied and use the Cisco Security Agent to download and apply the patches related to the new vulnerability to the cluster.

C.
Verify that the latest Cisco operating system patches have been applied, and then wait for the next monthly operating system service release and update the cluster.

D.
Verify that the latest Cisco operating system patches have been applied. Then, wait 24 hours to determine if the warning results in a critical hot fix patch by Cisco and use this patch to update the cluster. Otherwise, wait for the next monthly operating system service release.