So my friend on discord sent me a link to a RetroArch BIOS pack to help me find some BIOS for my Raspberry Pi 3/Retropie that's coming in the mail on Monday, and I was planning to find some BIOS for MAME/Neo Geo because I already found all of the BIOS I wanted and that was the only thing left on my list.

And inside of the folder was these three files:
Screenshot_504.png
Which one do I use? Do I use all of them or one of each?

Any help is appreciated! :)