Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to decorate a cake with whipped cream icing [title] Chill your cookware for 10-15 minutes. [step] Before you start making your icing, place a large metal bowl and the metal whisk attachments from an electric mixer into the freezer to chill. Your whipped cream frosting will come together and hold its shape much easier if your cookware is chilled.

Ending1: [title] Add your desired colored sugar and whisk. [step] Once the whipping cream has chilled, pour your desired amount of sugar and combine in 1 cup (230 g) of food coloring. Ending2: [substeps] Avoid chilling your cake near air vents or heating vents, as your cake will be very hot and blow cool air. [title] Combine 2 1/2 cups of the whipped cream and the butter. Ending3: [substeps] Time yourself by placing more ice cream bowl than the metal whisk attachments. This will make it easier to coat your cake with icing after. Ending4: [substeps] If you don't have a metal bowl, it's fine to use plastic. However, it's best to use metal, as metal bowls will help insulate cold whipping cream, which makes for a more stabilized icing.

Answer format: ending1/ending2/ending3/ending4