I feel like anyone who isn't supporting England or whoever their national team is at this World Cup is all in on Argentina. Let's come together my brothers and sisters.
Argentina qualify with any one of these scenarios:
* They win
* They draw, and Saudi Arabia don't win in the other game. Or if Mexico win by three goals or fewer. (There's actually more to it as well but CBA to type it all out)
Poland qualify with:
* A win
* A draw
* A loss, providing Saudi Arabia don't win the other game. The loss also has to be small enough to prevent them being overtaken on GD, because a Saudi Arabia draw can also be enough in certain scenarios to knock a defeated Poland out if Poland lose by 3 goals.