Write the next sentence in the following story.

How to make gluten free dinner rolls
Preheat the oven to 170 c (340 f).
Sieve both flours and the baking powder into a bowl.
In a separate bowl, mix the hot water, margarine, sugar and salt until the margarine melts and the sugar and salt dissolve.

Choices: A. In another separate bowl, beat the egg with the milk until combined. Add the hot water mixture to the flour mixture, then stir until combined.. B. In a separate bowl, whisk the flour, baking powder, baking soda and salt until the dough forms a ball. Roll the dough out on a lightly floured work surface with a rolling pin until it looks like breadcrumbs.. C. Fold in the eggs and then the egg wash. Mix in 2 tablespoons (30 ml) of the sweet corn flour.. D. Pour the filling and the egg yolks into a separate bowl. In the other bowl, combine the flour, baking powder, eggs and salt... The answer should be
A.