A customer needs a new database server.  The database application has a high memory overhead but does not benefit from 8-way processing.  They would like a rack mountable system， which will support four Xeon processors with 512KB of L2 cache and 16GB of main system memory.  Which of the following will satisfy the customer’s requirements？（）

• A、x445 with four Xeon DP processors and 16GB of memory in a single SMP module
• B、x445 with four Xeon MP processors and 16GB of memory in a single SMP module
• C、x445 with two SMP modules each containing two Xeon DP processors and 8GB of memory
• D、x445 with two SMP modules each containing two Xeon MP processors and 8GB of memory