Which TWO commands can be used to make the file /tmp/foo.txt readable for all users?

chmod 111 sets only the execute bit for all three categories, granting no read permission to any user.

chmod 444 sets the read bit (4) for owner, group, and others, giving every user read access with no write or execute permissions, satisfying the requirement for all users.

chmod 770 grants read, write, and execute to the owner and group but assigns zero permissions to others, so non-group users cannot read the file.

chmod 644 sets read-write (6) for the owner and read (4) for both group and others, so every user on the system retains at least read access to the file.

chmod 640 grants read-write to the owner and read to the group, but assigns no permissions to others, leaving users outside the group unable to read the file.