In a Cross-vCenter implementation, where is the Universal Control Cluster deployed and configured?

A.
In each vCenter instance associated with the Cross-vCenter implementation.

B.
In each prepared NSX cluster associated with the Cross-vCenter implementation.

C.
In every vCenter instance associated with an NSX Manager.

D.
In the vCenter instance associated with the Primary NSX Manager.

Explanation:
https://pubs.vmware.com/NSX-62/topic/com.vmware.ICbase/PDF/nsx_62_cross_vc_install.pdf
(page 16)