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？（）

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
Detach the network cards,run rmdev on the devices and then dynamically reassign theadapters to the partitions and reconfigure