Which statement most completely describes the data encryption key file?

A.
Each key file is generated automatically by the IBM SmartCloud Notes service and is
used to encrypt all mail databases belonging to a given customer.

B.
Each key file is generated automatically by the staging server and is used to encrypt all
mail databases belonging to a given customer.

C.
Each key file is generated automatically by the staging server and is used to encrypt all
mail databases belonging to one specific control document for a given customer.

D.
Each key file is generated automatically by the SmartCloud Notes service and is used to
encrypt all mail databases belonging to one specific control document for a given customer.