During the provisioning process of OpenStack virtual machine instances, which of the following descriptions of the status change process of provisioning tasks is correct?

During the provisioning process of OpenStack virtual machine instances, which of the following descriptions of the status change process of provisioning tasks is correct?
A . Scheduling – lock Device Mapping – Spawning – Networking – None
B . Scheduling – Block Device Mapping – Networking – Spawning – None
C . Scheduling – Networking – Spawning – Block Device Mapping – None
D . Scheduling – Networking – Block Device Mapping – Spawning – None

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Answer: B