A customer has a need for an xSeries server for an application requiring 12GB memory with the capacity of up to 20GB.  The HDD configuration needs to be as follows：      （1）Two drives RAID-1 for the operating system   （2）Five drives for Data in a RAID-5 configuration with one Hot-Spare       （3）All drives have to be internal.  Which of the following will satisfy the requirements for the application？（）

• A、x366
• B、x255
• C、x346
• D、x455