Which users are created and can be used for database an…

Which users are created and can be used for database and host management of your
DBaaS database servers?

A.
root,opcandoracleusers

B.
root,oracleandcloudusers

C.
rootandoracleusers

D.
opcandoracleusers

E.
cloudandoracleusers

Explanation:
Linux user accounts that are provisioned on an Oracle Database Cloud Service
deployment that hosts an Oracle Real Application Clusters (Oracle RAC) database:
* opc
The system administrator account you use to connect to the compute node using SSH.
This user can use the sudo command to perform operations that require root-user access.
* oracle
The Oracle Database administrator account you use to access the system and perform
non-root database administration tasks.
* grid
The Oracle Grid Infrastructure administrator account you use to perform ASM, ACFS, and
clusterware administration tasks.
* root
The root administrator for the system. You do not have direct access to this account. To
perform operations that require root-user access, use the sudo command as the opc user.
https://docs.oracle.com/en/cloud/paas/database-dbaas-cloud/csdbi/linux-useraccounts-rac.html