Which of the following is not true for checkpointing virtual clusters?

Question $11$ options:

The checkpointing size also affects the scalability of providing high availability when checkpointing multiple VMs together.

$.$ A VC is a set of multiple VMs deployed on different physical machines but managed as a single entity

End users typically submit their applications, often distributed, to a VC$,$ and the environment transparently hosts those applications on the underlying set of VMs

VCs are gaining increasing attention in the SaaS paradigms in the cloud computing domain