What is required when changing a virtual machine name using the vSphere Web Client?

A.
Verify connectivity to the ESXi host where the virtual machine is running and its inventory list is accessible.

B.
Verify in which datastore the virtual machine resides and that you have access and its inventory list is accessible.

C.
Verify that virtual machine files are stored in the same datastore and can be accessed in the datastore browser list.

D.
Verify the virtual machine is not running in Fault Tolerant mode and that it is not in a Distributed Resource Scheduler cluster.

Explanation:
Before changing the name, verify connectivity to ESXi host where the virtual machine resides and that its inventory list is accessible.
https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1003742