Subbmit windows 8 application directx Levels?

im trying to submit a unity game to windows store however i dont know what to select

Minimum DirectX feature level

the options are

1.available to all systems
2.available to all systems who use directX features 9_3 and above
3 .available to all systems who use directX features 10 and above

Well, basically most (if not all) ARM tablets (except Qualcomm which support feature level 9_3) support feature level 9_1, so if you pick option 2. or 3. , that means you’ll restrict your game of run on ARM tablets.

Regarding X86 or X64, tablets, it varies between 9_1, 9_3, 10_1, so basically that means some will be able to run your game, some are not, if you won’t choose option 1.

All current gen PCs usually have feature level 11.0.

Hope that helps