A customer with a well-known brand wants to make sure they have a Green decision in their next IT infrastructure investment.   How can IBM Cool Blue help this customer？ （）

• A、Providing tools to plan， monitor， manage， and reduce power consumption.
• B、Reducing cooling requirements by running CPUs at lower speeds.
• C、Using smart system design to create high-power servers.
• D、Adapting existing solutions like the Rear Door eXpander.