What must the administrator do to meet this requirement?

An administrator wants to be able to log in to the vSphere Client and view the inventories of two vCenter Server instances.

What must the administrator do to meet this requirement? (Choose the best answer.)
A . Configure Enhanced Linked Mode on each vCenter Server instance after deployment is complete.
B . Connect each vCenter Server instance to the same vCenter Single Sign-On domain during deployment.
C . Connect each vCenter Server instance to the same vCenter Single Sign-On domain using the vSphere Client.
D . Configure the vCenter Server Management Interface to view both vCenter Server
instances.

Answer: B

Explanation:

https://kb.vmware.com/s/article/2034074

You can join vCenter Server instances in Linked Mode only when all of the instances are registered in the same Single Sign-On deployment. This includes Single Sign-On instances installed on different sites. When vCenter Server B on site B is joined to vCenter Server A on site A, the join tool establishes connection both to Single Sign-On A and Single Sign-On B.