What should the administrator do?

A vSphere administrator has created a vSphere Standard Switch with one virtual machine port
group and one physical uplink. The administrator needs to ensure that the virtual machines on this
port group can communicate only with each other.
What should the administrator do?

A.
Remove the physical uplink from the vSphere Standard Switch

B.
Create a Private VLAN and apply it to the virtual machine port group on the vSphere Standard
Switch

C.
Enable Port Security on the vSphere Standard Switch

D.
Enable the Fenced setting on the virtual machine port group

Explanation: