Your database is in NOARCHIVELOG mode. You want to enable archiving for the database. Examine the steps:
1.Execute the ALTER DATABASE ARCHIVELOG command.
2.Execute SHUTDOWN IMMEDIATE.
3.Execute STARTUP MOUNT.
4.Set the DB_RECOVERY_FILE_DEST parameter to $ORACLE_HOME/dbs/.
5.Execute STARTUP NOMOUNT.
6.Open the database.
Identify the required steps in the correct sequence.
A. 4,2,5,1,6
B. 1,2,3, 4, 6
C. 2,3,1,6
D. 2, 5,1,6