A small business currently has four separate servers， three of which perform low-overhead tasks with small memory footprints. How could the company BEST reduce power consumption among these four servers， while not sacrificing functionality？（）

• A、Enable each server’s Cool ’n’ Quiet and/or SpeedStep functionality so that processing power is conserved.
• B、Enforce auto-shutdown routines on all four servers for after-hours power saving while the office is closed.
• C、Consolidate the four servers onto the best two，combining them logically by tasks and memory consumption.
• D、Consolidate the four servers onto the most powerful machine using virtualization.