What are the advantages of a central Enterprise Services Repository (ESR) in a federated environment? Note: There are 2 correct answers to this question.

What are the advantages of a central Enterprise Services Repository (ESR) in a federated environment? Note: There are 2 correct answers to this question.
A . The local SLD can be connected to the central ES
C . It minimizes your total cost of ownership (TCO) in your landscape.
D . There is less initial installation effort required by SAP Basis team.
E . The need of transporting scenarios and administration tasks is reduced.

Answer: A,B