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Given the script  
create script db_backup_datafile_script 
{backup datafile and 1， and2 plus archivelog delete input；}
Run {execute script db_backup_datafile_script using 2；}  
What is the result of running this command？（）  
 

Upon starting your database, you receive the following error:

You can choose from the following steps:
1.Restore the database datafiles.
2.Issue the alter database clear unarchived logfile group 1 command.
3.Issue the alter database open command.
4.Issue the alter database open resetlogs command.
5.Recover the database using point-in-time recovery.
6.Issue the Startup Mount command to mount the database.
7.Back up the database.
Which is the correct order of these steps in this case?（）