Which three options need to be considered when implementing multiple vCenter Server in App Volumes 2.x?

Which three options need to be considered when implementing multiple vCenter Server in App Volumes 2.x? (Choose three.)
A. Datastore names must be unique.
B. Each vCenter must use the same credentials.
C. Host names must be unique.
D. Portgroups must be unique.
E. Each vCenter must support Cross vCenter VMotion.