Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make russian tea cakes [title] Place the butter in a bowl along with the confectioner's sugar. [title] Mix the two ingredients in a mixing bowl using either a handheld mixer or a stand mixer with a paddle attachment. [step] The finished mixture should look creamy with a light yellow color.

Ending1: [title] Add the chopped strawberries and green apples. [step] Stir them into the mixture with a wooden spoon. Ending2: [title] Add the vanilla and beat the butter mixture for an additional 30 seconds. [title] Place the flour and kosher salt into another clean mixing bowl. Ending3: [title] Add the gelatin to the mixture then slowly put in the remaining water in the mixing bowl. [step] You can add more or less water depending on how warm you like your tea. Ending4: [title] Set the mixer on low and beat the ingredients. [step] Keep beating until the mixture reaches a light yellow color.

Answer format: ending1/ending2/ending3/ending4