What is incorrect about the description of the CPU QoS technology in the FusionCompute?

What is incorrect about the description of the CPU QoS technology in the FusionCompute?
A . Control the use of CPU resources of the virtual machine by adjusting "reserve", "share", and "limitation"
B . The role of "share" is to guarantee the lower limit of the computing power of the virtual machine, that is, how much resources can be used at least
C . The role of “share” is to balance and adjust resources according to the relative CPU share of multiple virtual machines when computing resources are insufficient.
D . The role of "Restrictions" are the maximum resources that a virtual machine can use

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Answer: B