A CLARiiON CX4-480 is configured with two front-end FC ports, two back-end FC ports, and two iSCSI ports on each storage processor. How can the array be configured to support 280 drives?

A.
Add additional drives to existing back-end loops

B.
Add I/O module with four back-end ports

C.
Add I/O module with two front-end and two back-end ports to each SP

D.
Cannot add additional drives; must use Data-in-Place upgrade to a CX4-960