Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to make oatmeal cookies [title] Preheat the oven to 350 degrees. [title] Beat the butter and sugars. [step] Place the butter, white sugar, and brown sugar in a large bowl.

Ending1: Beat the mixture together on medium speed until it is light and fluffy. [substeps] Alternatively, you can stand the butter in the refrigerator overnight to soften it and reduce the stickiness. Ending2: Beat the ingredients together until the mix resembles coarse crumbs. Alternatively, you can use a stand mixer to beat everything together. Ending3: Beat them together using an electric mixer, stirring them with a fork until the dry ingredients are light and fluffy. [substeps] Save the dry ingredients to use later. Ending4: Using an electric mixer, beat the ingredients until the mixture is fully combined and becomes light and fluffy. This should take about 3 or 4 minutes.

Answer format: ending1/ending2/ending3/ending4