To Use the Storage Space of OceanStor V3 More Efficiently

To use the storage space of OceanStor V3 more efficiently, a customer has specified file system quotas for different departments. If a soft quota alarm is generated for the file system used by department A, which methods can be used to clear the alarm and ensure that new data can be successfully written? (Multiple Choice)

A) Delete the files that department A does not need to use.
B) Enable SmartDeduplication for the file system used by department A.
C) Expand the file system quota for department A.
D) Enable SmartCompression for the file system used by department A.