You are upgrading the Slot2 line card within your Brocade VDX 8770-4 from a 48-port 10 GbE
card to a 12-port 40 GbE card.
Which action must be taken before the upgrade is successful?

A.
The 10 GbE card needs to be removed and the chassis reloaded.

B.
This operation must be performed while the switch is powered off.

C.
No special configuration is required.

D.
The slot2 line card must be powered off and no linecard 2 executed.