Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a minnie mouse cake [title] Beat the sugar and butter on medium speed. [step] Place your butter and sugar in a mixing bowl. Using an electronic mixer set to medium speed, beat the sugar and butter together.

Ending1: Keep beating the mixture until it's smooth, creamy, and even. [title] Beat in the eggs one at a time. Ending2: [title] Add the sugar and the icing. [step] Beat the sugar and the icing together on medium speed for about 10 seconds. Ending3: Do this for about 20 seconds, or until the mixture becomes a light pink color. [substeps] You can play with the mixer's paddle to vary the speed. Ending4: Work in batches so they are evenly combined. [substeps] You can also use an electric mixer if the recipe calls for it.

Answer format: ending1/ending2/ending3/ending4