what is the correct order in which the following RMAN commands should be executed?

You want to migrate your database to ASM, so youve done a clean shutdown, made a closed
backup of the entire database, noted the location of your control files and online redo log files, and
changed your spfile to use OMF. The last step is to run an RMAN script to do the conversion.
Using the following steps, what is the correct order in which the following RMAN commands
should be executed?
1. STARTUP NOMOUNT
2. ALTER DATABASE OPEN RESETLOGS
3. SQL ALTER DATABASE RENAME logfile1 path TO +dgrp4 # plus all other logfiles
4. SWITCH DATABASE TO COPY
5. BACKUP AS COPY DATABASE FORMAT +dgrp4
6. ALTER DATABASE MOUNT
7. RESTORE CONTROLFILE FROM controlfile_location

A.
2, 5, 3, 1, 7, 6, 4

B.
1, 7, 6, 5, 4, 3, 2

C.
5, 1, 2, 7, 4, 6, 3

D.
7, 3, 1, 5, 6, 2, 4