Customer requests a HX5 blade but his application may demand more than its 16 memory DIMMS. Software licensing is a big concern. Which of the following additions meets this requirement？ （）

单项选择题WhichofthefollowingisusedinanIBMBladeCentertoprovidecooling？（）

A.Fans for each blade
B.Chilled Water
C.Blowers
D.Freon

单项选择题AretailcustomerhasjustinstallanIBMoptionintotheirserver，buttheoptionisnotworkingproperly.Whichthefollowingshouldbecheckedtodetermineifthedevicesissupportedintheserver？（）

A.IBM ServerProven site
B.System x Reference Library （xRef）
C.COG Compatibility List
D.Hardware Compatibility List （HCL）