Which step ensures that the Call Bridge can use the database?

An administrator performs a major upgrade of a Cisco Meeting Server cluster that contains multiple database nodes .

Which step ensures that the Call Bridge can use the database?
A . The command database cluster initialize must be run on the master database node.
B . The master database node must be the first server to complete the upgrade process.
C . The command database cluster upgrade_schema must be run on the master database node.
D . The master database node must create a new database cluster and join the peer servers.

Answer: A

Explanation:

Reference: https://www.cisco.com/c/en/us/support/docs/conferencing/meeting-server/210530-configure-cisco-meeting-server-call-brid.html