A client is running a two node active/passive cluster on AIX 6.1 and needs to migrate AIX
versions while minimizing the time the cluster runs without a failover node available. They
plan to migrate the passive node, before moving the resources off the active node to migrate
it.Which of the following options will minimize the time that the passive node is unavailable?

A.
Run a network-boot NIM migration from the NIM master on the current passive node.

B.
Run a local migration from assigned a DVD-RAM media to remove any network
overheads.

C.
Run the migration using nimadm with cluster services still running on the passive node.

D.
Run alt_disk_copy to create a backup to a spare disk prior to initiating a NIM migration.