A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows: What happens when the whole CONTROLLER1 Failure group is damaged?（）

AThe transactions that use the disk group will halt.

BThe mirroring of allocation units occurs within the CONTROLLER2 failure group.

CThe data in the CONTROLLER1 failure group is shifted to the CONTROLLER2 failure group and implicit rebalancing is triggered.

DThe ASM does not mirror any data and newly allocated primary allocation units (AU) are stored in the CONTROLLER2 failure group.