What is the effect of running the virsh vcpupin CLUSNODE2 4,2 command?

A.
It sets the affinity of virtual CPU 4 of virtual machine CLUSNODE2 to physical processor 2.

B.
It reduces the number of virtual CPUs in CLUSNODE2 from 4 to 2.

C.
It increases the number of virtual CPUs in CLUSNODE2 from 2 to 4.

D.
It sets the affinity for all virtual CPUs of virtual machine CLUSNODE2 to the physical processors 2 and 4.