Which behavior should an administrator expect when performing the Veritas InfoScale Availability online upgrade process using the installer?

Which behavior should an administrator expect when performing the Veritas InfoScale Availability online upgrade process using the installer?
A . The cluster remains online and the kernel processes are swapped during the upgrade process.
B . The cluster is taken offline one node at a time during the package upgrade.
C . The cluster is taken offline during the upgrade process, but the applications stay online.
D . The cluster remains online during the update process, but the service groups are offline.

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Answer: A