What can an optional PCI-x Card slot be used for on an EMC Data Domain system?

A.
1 GbE, 10 GbE, HBA VTL, SAS HBA only

B.
1 GbE, 10 GbE, SAS HBA only

C.
1 GbE and SAS HBA only

D.
1 GbE, 10 GbE, HBA VTL only