Which method can you use to receive a notification when the free disk space in the recovery area falls below 10%?

Which method can you use to receive a notification when the free disk space in the recovery area falls below 10%?

A.
Submit a job that queries the Automatic Workload Repository (AWR).

B.
Create an alert that sends a notification when the threshold value is reached.

C.
Invoke the Database Configuration Assistant (DBCA) to configure notifications and set threshold values.

D.
Specify the users who should receive notifications in the Preferred Credentials of the Enterprise Manager.

E.
Run the Automatic Database Diagnostic Monitor (ADDM) to analyze disk space and display a warning message.