You are ready to implement RMAN in the backup and recover strategy for your company. Which system privilege must the RMAN user have to be able to connect and execute RMAN commands on a target database？（）

• A、SYSDBA
• B、SYSOPER
• C、No system privileges are required for the RMAN user.
• D、Only SYS user can connect and execute RMAN commands on a target database.