Write the next sentence in this paragraph:

How to make unicorn cupcakes 
Preheat your oven and combine your flour, salt, and baking powder. 
Preheat your oven to 350 ° f (177 ° c). In a medium sized bowl, combine your flour, salt and baking powder with a spoon.

OPTIONS:
(a). Set your bowl of dry ingredients aside until you're ready to use it. Cream your butter and add sugar, vanilla, and eggs.;
(b). Allow the mixture to come to room temperature so it cools more quickly. Add the sugar and cinnamon to the mixture.;
(c). Beat until they're blended in well. Pour in the three tablespoons of warm water.;
(d). Use a hand mixer to mix everything together. Stop the mixer when there are no clumps of flour.;
(a).