Your customer has a 2-node cluster with two FAS2554 controllers running clustered Data ONTAP 8.3.
You want to upgrade non-disruptively to clustered Data ONTAP 8.3.1 using the rolling-upgrade method.
Which two operations would you perform before issuing the A storage failover takeover – of node NodeAcommand? (Choose two.)

A.
Upgrade the service processor of all nodes.

B.
Migrate all LIFs used for iSCSI and FC away from NodeA.

C.
Change the default boot image to the new image.

D.
Install the new software image on all nodes.