What are the advantages of variable extent size support for large ASM files?（）
- AIt improves resync operations when the disk comes online after being taken offline for maintenance purposes.
- BIt improves performance in the extended cluster configuration by reading from a local copy of an extent.
- CFewer extent pointers are needed to describe the file and less memory is required to manage the extent maps in the shared pool.
- DThis feature enables faster file opens because of the reduction in the amount of memory that is required to store file extents.