What is indicated when the circled LED on the base enclosure is illuminated amber?

Refer to the exhibit.

What is indicated when the circled LED on the base enclosure is illuminated amber?
A . Base enclosure power-on
B . Cluster discovery state
C . Cluster service mode
D . Base enclosure fault

Answer: D

Explanation:

https://www.dell.com/support/manuals/en-us/powerstore/pwrstr-hwg/base-enclosure-front-view?guid=guid-034671bd-ce1c-4c7f-a4d7-2679611fae51&lang=en-us