A customer has asked the System x Sales Specialist to provide a solution that meets the following requirements：   -- 4U rack-dense server   -- 4 quad-core processors  -- 32 GB of memory   -- 4 Internal SAS hard drives with RAID 5 support   -- Redundant Power Supplies  -- 7 PCI-E slots available   A competitor presented the customer with a solution comparable to a Dell PowerEdge 4-socket server.  Which of the following should the System x Sales Specialist present as an advantage over the competitor’s solution？ （）

• A、x3255
• B、x3655
• C、x3755
• D、x3850 M2