what is the benefit of additional grounding points?

According to the Enterprise Installation Standards (EIS) on electrical grounding, what is the benefit
of additional grounding points?

A.
Protect systems by helping to avoid leakage current

B.
Allows racks to support either AC or DC

C.
Allows a rack to support more than two dedicated circuit feeds for higher redundancy

D.
Allows a rack to support more than one UPS system for higher redundancy