A customer environment has an EMC Data Domain system with Data Domain Extended Retention enabled.
The environment has three sealed extended retention units. The customer notices a slight delay when
accessing the oldest data sets.
What is a potential reason for this issue?

A.
Retention units may be swapped out of memory

B.
Retention units were marked “Ready Sealed”

C.
Retention units should be unsealed

D.
Retention unit data is encrypted