During a presentation on the p5 machines， a customer asks the pSeries technical specialist a question regarding the differences between POWER4+ and POWER5.  In addition to new advanced power management， SMT， and larger L2 and L3 caches in POWER5， which of the following describes some of the key improvements in POWER5？（）

• A、Micro-Partitioning support and the L3 controller is now between L2 and main memory.
• B、Dynamic partitioning support and the L3 controller is now between L2 and main memory.
• C、Micro-Partitioning support and the L3 controller is no longer between L2 and main memory.
• D、Dynamic partitioning support and the L3 controller is no longer between L2 and main memory.