Which two statements about Global Data Services (GDS) are correct?

Which two statements about Global Data Services (GDS) are correct?

A.
GDS allows scaling replication-aware application workloads beyond the cluster (that is, across
replicated clusters).

B.
GDS helps in performing data replication.

C.
GDS works seamlessly with any combination of Oracle RAC databases, single-instance
databases, Oracle Data Guard, Oracle Active Data Guard, and Oracle Golden Gate.

D.
GDS helps to perform database failovers, and does not require Data Guard Broker.

E.
The GDSMGRL utility is a command-line interface for configuring and managing the Global
Data Services framework.

Explanation:
http://www.oracle.com/technetwork/database/availability/global-data-services-12c-wp-1964780.pdf (page 8)