Excerpt from Chocolate and Cocoa Recipes and Home-Made Candy Recipes Miss Parloa

Measure out three-fourths of a cupful of sifted flour, and stir it and the whites into the yolks. The whites and flour must be cut in as lightly as possible, and with a very little stirring. Drop the mixture in teaspoonfuls on the buttered paper. Sprinkle powdered sugar over the cakes, and bake in a slow oven for about fourteen or fifteen minutes. The mixture can be shaped like ladyfingers if preferred.
What does one do AFTER dropping the mixture onto the buttered paper?

A) Add the melted chocolate.
B) Stir the egg whites into the yolks.
C) Sprinkle powdered sugar over the cakes.
D) Bake in a slow oven for fourteen to fifteen minutes.