Doughnuts not included

You’re connecting a new server to a power source in a new data center, but you’re not sure what voltage is in use. Which of these would be the best next step to follow?

A) Connect a multimeter to the power source

B) Configure your power supply for one voltage setting, and if it doesn’t work use the other setting

C) Configure your BIOS to automatically adjust to the proper voltage

D) Contact a licensed electrician to analyze the power source

E) Build your own nuclear power plant and run your own power line