What is the HP definition of virtualization?

A.
the process of abstracting applications and operating systems from physical resources

B.
an approach to IT that pools and shares resources so utilization is optimized and supply
automatically meets demand

C.
an approach that allows you to run multiple operating systems at the same time on the same
server without rebooting or repartitioning your disk

D.
the process of presenting a logical grouping or subset of computing resources so that they can
be accessed in ways that are different than the physical configuration