What is a benefit of a virtual machine when compared with a physical server?

What is a benefit of a virtual machine when compared with a physical server?
A . Multiple virtual servers can be deployed on the same physical server without having to buy additional hardware.
B . Virtual machines increase server processing performance.
C . The CPU and RAM resources on a virtual machine cannot be affected by other virtual machines.
D . Deploying a virtual machine is technically less complex than deploying a physical server.

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Answer: A