单项选择题

What is a key advantage of the POWER5 technology over all other competitive offerings？（）

A.POWER5 supports multiple operating systems.
B.POWER5 supports more nodes in a clustered environment.
C.POWER5 hypervisor has significantly less overhead than hardware partitioning.
D.POWER5 has greater granularity of resources such as memory， processors and I/O.

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IBM(000-238)

What is a key advantage of the POWER5 technology over all other competitive offerings？（）