Which of the following descriptions about OpenStack is wrong?

Which of the following descriptions about OpenStack is wrong?
A . The underlying virtualization resources are managed through the coordination of various component services, and the usage is flexible
B. OpenStack is an open source cloud platform operating system
C. Virtualization resources can be allocated and scheduled according to user needs, and allocated to different businesses and applications
D. OpenStack can independently implement resource access and abstraction without relying on the underlying virtualization software

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Answer: D