ItsMyVault101

One does not rule the other out.

1. C:/Users > all user data from all users on the PC
   or just from a single user
   %userprofile%/AppData
   %userprofile%/documents
   %userprofile%/(everything else like pictures, videos, etc.)
2. C:/ProgramData > some programs saving files here, so all users can use the data
3. C:/Program Files > majority of programs are installed here
4. C:/Program Files (86x) > some programs are installed here