Which two statements are true about variable extent size support for large ASM files?（）

AThe metadata used to track extents in SGA is reduced.

BRebalance operations are completed faster than with a fixed extent size

CAn ASM Instance automatically allocates an appropriate extent size.

DResync operations are completed faster when a disk comes online after being taken offline.

EPerformance improves in a stretch cluster configuration by reading from a local copy of an extent.