You are asked to install an AFF A700 with two DS224C shelves fully populated. When you arrive, the customer asks you to install an additional shelf.
Which shelf would you add to this cluster?
A. a DS224C shelf fully populated with SAS drives
B. a DS224C shelf fully populated with SATA drives
C. a DS2246 shelf fully populated with SSD drives
D. a DS4486 shelf fully populated with SATA drives