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

• A、The metadata used to track extents in SGA is reduced.
• B、Rebalance operations are completed faster than with a fixed extent size
• C、An ASM Instance automatically allocates an appropriate extent size.
• D、Resync operations are completed faster when a disk comes online after being taken offline.
• E、Performance improves in a stretch cluster configuration by reading from a local copy of an extent.