You want to create a guaranteed restore point for your database by executing the command:
SQL> CREATE RESTORE POINT dbrsp1 GUARANTEE FLASHBACK DATABASE;
Identify two prerequisites for the successful execution of this command.
A.
The database must be running in archivelog mode.
B.
Flashback Database must be enabled.
C.
Fast Recovery Area must be enabled.
D.
The recyclebin must be enabled for the database.
E.
Undo retention guarantee must be enabled.
F.
A database backup must be taken.
Explanation:
http://docs.oracle.com/cd/B19306_01/backup.102/b14192/rpfbdb002.htm
AC
The database must be in ARCHIVELOG mode if you are creating a guaranteed restore point.
You must have created a fast recovery area before creating a guaranteed restore point.
You need not enable flashback database before you create the restore point.
https://docs.oracle.com/database/121/SQLRF/statements_6013.htm#SQLRF20001