A Storage Checkpoint is created with the command: fsckptadm -R create thu_8pm /data1
Which statement about this checkpoint is correct if the file system runs out of space?

A.
It is removed even if it is mounted.

B.
This and all subsequent checkpoints are recursively removed.

C.
It is removed only if the checkpoint is unused.

D.
It can only be removed manually because it is a non-removable checkpoint.