A CallManager cluster contains one publisher and three subscribers. If the publisher is unavailable, which one of the following statements is true?

A.
Updates to the CallManager configuration on the subscribers will be accepted and will be uploaded to the publisher when the publisher recovers.

B.
CDRs are collected by the subscribers and will be uploaded to the publisher when the publisher recovers.

C.
New CallManager-managed IP telephony devices can be added to the cluster.

D.
CDRs are posted to the primary subscriber, which uploads them to the publisher when the publisher recovers.