Detailed Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Q: [header] How to bake an eastern german basic cake [title] Combine the margarine, sugar, and salt in a mixing bowl. [title] Crack the eggs, separate them, and add the egg yolks into the bowl. [step] Be careful not to get any shell into the mixture. <sep> (A) After stirring, add the egg white and mix. [substeps] If you are planning on using the cocoa powder, add it with the eggs prior to mixing. (B) [title] Mix the eggs again before adding the rest of the batter. [title] Add the flour, butter, cream, and salt if you like and mix well. (C) [title] Combine the flour, baking powder, and salt. [step] Cream the butter and egg well in a well-floured wok or large mixing bowl. (D) [title] Pour in the cream cheese using a non-stick spatula. [step] It is better to use a bowl that has a non-stick bottom.
A:
A