A customer is putting together a high-performance computing cluster of p655 nodes.  They need a total of 48 processors and want to get the best performance possible out of those systems.  They are evaluating four options and have asked the pSeries technical specialist to recommend which one would provide the best performance based on total rPerf.  Their workload may grow over time. Which of the following should the pSeries technical specialist recommend？（）

• A、Twelve 4-way p655 nodes and add more as needed
• B、Six 8-way p655 nodes and add more as needed
• C、Six 4-way p655 nodes with four processors CoD on each node in case of growth
• D、Three 8-way p655 nodes with eight processors CoD on each node in case of growth