What action should you take if the NMS is receiving temperature alarms from a router?

What action should you take if the NMS is receiving temperature alarms from a router?

A.
Check the fan tray to ensure that all of the fans are functioning properly.

B.
Check the line card to ensure that it is not generating excessive heat.

C.
Check the interfaces to ensure that they are not generating excessive heat.

D.
Check the grounding wire to ensure that it is attached properly.