The game won't let you continue if you get less than 50, which isn't an option. If you earn less than 50, then the game assumes that you haven't started earning money (which probably is true; you can sell the potions that you get throughout this point of the game and sell them for something around 50 Munny). The top three answers are for the AP bonus, primarily.

So the answer is... Æ (W)

EDIT: LOL at ur sig, way to nuke the thread.