A customer has a new Power 720 with PowerVM Standard Edition.  They plan to migrate their single-partition POWER5 550 to the new Power 720.   How can the customer migrate from the POWER5 550 to the Power 720 with minimal effort and down time？（）

• A、Perform Live Partition Mobility between the two systems.
• B、Move the boot disks from the old system to the new system.
• C、Use Tivoli Storage Manager to back up the POWER5 550 and restore on the Power 720.
• D、Upgrade AIX to the latest level on the POWER5 550 and clone using the mksysb command.