Which three statements accurately describe the components of the Cluster Ready Services Technology Stack?

Which three statements accurately describe the components of the Cluster Ready Services
Technology Stack?

A.
Cluster Ready Services (CRS): A specialized oraagent process that helps CRSD manage resources
owned by root, such as the network, and the Grid virtual IP address.

B.
Cluster Synchronization Services (CSS): Manages the cluster configuration by controlling which
nodes are members of the cluster and by notifying members when a node joins or leaves the cluster.

C.
Cluster Time Synchronization Service (CTSS): A background process that publishes events that
Oracle Clusterware creates.

D.
Event Management (EVM): Provides time management in a cluster for Oracle Clusterware.

E.
Grid Naming Service (GNS): Handles requests sent by external DNS servers, performing name
resolution for names defined by the cluster.

F.
Oracle Agent (oraagent): This process was known as RACG in Oracle Clusterware 11gR1 (11.1).

Explanation:
The following list describes the processes that comprise CRS: The CRSD manages cluster resources
based on the configuration information that is stored in OCR for each resource. This includes start,
stop, monitor, and failover operations. The CRSD process generates events when the status of a
resource changes. When you have Oracle RAC installed, the CRSD process monitors the Oracle
database instance, listener, and so on, and automatically restarts these components when a failure
occurs. The cssdagent process monitors the cluster and provides I/O fencing. This service formerly
was provided by Oracle Process Monitor Daemon (oprocd), also known as OraFenceService on
Windows. A cssdagent failure may result in Oracle Clusterware restarting the node.

https://docs.oracle.com/database/121/CWADD/intro.htm#CWADD90956