Which three statements are true about Quality of Service Management (QoS)?

[answerhappygod]

Which three statements are true about Quality of Service Management (QoS)?

A. A server-pool can be managed by QoS even if it does have database instances running on nay server inthe pool.
B. It can manage database services only if they are defined as UNIFORM services.
C. It requires Oracle Grid Infrastructure for a Cluster to be installed and Clusterware to be running.
D. It supports multiple databases assigned to the same server pool. E. Databases managed by QoS can be administrator managed or policy managed.