A customer is cost-justifying advanced software functions of several disk subsystem vendors.Which of the following software features of the Storwize V7000 are provided at no charge?()
A.Easy Tier, FlashCopy, Thin Provisioning
B.Easy Tier, External Virtualization, FlashCopy
C.Easy Tier, Metro/Global Mirror, Thin Provisioning
D.Metro/Global Mirror, FlashCopy, External Virtualization