What is the most logical next event?

How to make chocolate cream pie
Whisk together the cornstarch and cocoa powder in a saucepan.
Don't turn on the stove just yet. You simply want the cornstarch and cocoa powder to be mixed together.

Options are:
I. Make sure that the sugar and cocoa mixture is completely dissolved and combine it with the flour mixture. Pour in the flour mixture and mix it in with a whisk until there are no lumps left..
II. Stir continuously until the ingredients have been well-blended. This recipe calls for 2-4 cups (292 ml) flour; wait until the mixer is setting..
III. This will give you a smoother mixture in the end. Pour in the water, and briskly stir until combined..
IV. When the mixture begins to bubble, remove it from the heat. Mash the two ingredients together until foamy..
III.