Company.com is adding a new I/O drawer to an existing p5-570 with four LPARs and wants to re-balance the network cards in the I/O drawers. What is the best way to accomplish this？（）

• A、Add the devices as virtual adapters to a VIO server first,then add the I/O drawer and create the shared ethernet adapters
• B、Power down the partitions,run the diag a command when the system is brought back up and reconfigure the network cards
• C、Use the rmdev command to remove the devices,shut down the partitions and move the cads,then run the cfgmgr command after reboot
• D、Detach the network cards,run rmdev on the devices and then dynamically reassign theadapters to the partitions and reconfigure