EMC Exam Questions

How can you explain this?

A new customer is testing their recently installed EMC Centera and calls you inquiring about

objects they are unable to delete from the cluster. They tell you they can read, write, and execute
the delete function, which seems to work as they are unable to read the object after it is deleted.
However, based on the object count it seems the objects are not completely removed from the
cluster.
How can you explain this?

A.
After the delete is executed a reflection replaces the original data.

B.
Deleted objects are marked as unreadable on EMC Centera and the cdf is retained for auditing.

C.
Deleted objects are marked as unreadable on EMC Centera and are never actually removed.

D.
Evidence of deleted data is not completely removed from the cluster until stub files are cleaned.