Which version of SPMC do I download??

I have a s912 board.Its 64 bit.
Choice of downloads.Google play store.
https://play.google.com/store/apps/detai…pax.spmc16
Doesnt say anything about it being 64 bit.
Other choice are ..
Latest Jarvis build is: 16.5.5 link
ARM32 APK: link
ARM32 Launcher APK: link
More downloads at: link

Google Play: link
Issues and questions: github

Under more downloads

MBSPMC-16.5.5-spmc-972797d-aarch64.apk
MBSPMC-16.5.5-spmc-972797d-aarch64_launcher.apk
MBSPMC-16.5.5-spmc-972797d-armeabi-v7a.apk
MBSPMC-16.5.5-spmc-972797d-armeabi-v7a_launcher.apk
MBSPMC-16.5.5-spmc-972797d-x86.apk
MBSPMC-16.5.5-spmc-972797d-x86_launcher.apk
MBSPMC-16.5.5-spmc-abac4dd-win32.exe
Source code (zip)
Source code (tar.gz)

https://github.com/koying/SPMC/releases/tag/16.5.5-spmc

Im guessing one of the top 2 with d-aarch64 in it??But which one just .apk or _launcher. apk??My first guess is d-aarch64 is for arch linux.Must be his preference for a Linux distro and not to do anything with Android other than they both begin with “A”