What is the most likely cause of the unbalanced power load?

A server room has two power grids, A and B. PSU1 on each server is on grid A, and PSU2 is on grid B. Grid B has significantly lower load compared to grid A.

What is the most likely cause of the unbalanced power load?

A. PSU1 is a higher wattage power supply than PSU2

B. Hot spare feature is enabled in power supply configuration

C. PSU1 is always the primary power supply

D. UPS and PDU are not installed to balance the load

Answer: C