Refer to the exhibit.
An engineer is troubleshooting operational performance in the network. Which action should be taken to restore high availability in this subcluster?
A. Go to “Presence Redundancy Group Configuration” on the Cisco UCM Administration page and select the Fallback button.
B. Go to “Presence User Assignment” on the Cisco UCM Administration page and select “rebalance users” for all users.
C. Start all critical services on the second node, and select the Fallback button in the “Presence Redundancy Group Configuration”.
D. Start all critical services on both nodes and select “rebalance users” in the “Presence User Assignment”.
