You want to reorganize the DATA diskgroup while continuing database operations. TheDATA diskgroup was created using norm

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You want to reorganize the DATA diskgroup while continuing database operations. TheDATA diskgroup was created using normal redundancy having one disk per failure group.The two disks used are /dev/sdal and /dev/sda2.You plan to drop the existing disks and add the /dev/sdb1 and /dev/sdb2 disks to failure group FG_C and the /dev/sdcl and /dev/sdc2 disks to failure group FG_D.Which procedure would you use to minimize the effect of the I/Os of this reorganization on ongoing database operations?

A. Set rebalance power to 0 for diskgroup DATA. Add failure group FG_C with all the /dev/sdb disks. Add failure group FG_D with all the /dev/sdc disks. Drop disks/dev/sda1 and /dev/sda2. Set rebalance power to 1 for diskgroup DATA.
B. Set rebalance power to 0 for diskgroup DATA. Add failure group FG_C with all the /dev/sdb disks. Add failure group FG_D with all the /dev/sdb disks. Drop disks/dev/sda1 and /dev/sda2. Set rebalance power to 9 for diskgroup DATA.
C. Set rebalance power to 9 for diskgroup DATA. Add failure group FG_C with all the /dev/sdb disks. Add failure group FG_D with all the /dev/sdc disks. Drop disks /dev/sda1 and /dev/sda2. Set rebalance power to 0 for diskgroup DATA.
D. Set rebalance power to 0 for diskgroup DATA Drop disks /dev/sdal and /dev/sdb disks. Add failure group FG_C with all the /dev/sdb disks. Add failure group FG_D with all the /dev/sdc disks Set rebalance power to 1 for diskgroup DATA.