Which of the following can save energy consumption in a data center?

Which of the following can save energy consumption in a data center?

A.
Eliminate using raised flooring in the data center.

B.
Install cooling in the corners of the data center so cool air can circle the room.

C.
Place most servers in the middle of the data center allowing cool air to flow around them.

D.
Evenly space out equipment to avoid an increased temperature in one area of the room.