[B], developing the art style guide and production plan.
It wouldn't be [A], because patches are released to consumers of the game, to fix bugs and add new content, which won't be done until post-production.
It wouldn't be [C] either, as it is also post-production, because you are sending the game to produced, packaged and shipped, meaning the game has already been pretty much fully developed.
B. Because conditional statements have an IF before stating the condition
Put the insertion point where you want the page to break is what I would write.
Robert E Kahn I hope this helps