Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a vanilla sponge cake [title] Preheat the oven to 180ºc/350ºf. [step] Prepare the cake pan. Line the base with parchment/baking paper and grease the edges of the pan. Line a wire baking rack with parchment/baking paper.

Ending1: [substeps] Tip the cake pan onto the greased pans. [title] Slice the cake into slices and put them in an oven preheated to 180ºc/350ºf. Ending2: [title] Use a tablespoon of butter to grease and cream the cake pan. [step] You will probably have to use a little more or less depending on the size of your sponge cake pan. Ending3: Layer the pieces by wrapping each piece individually in wax paper. [title] Boil the cake until it turns dark orange. Ending4: [title] Sift the flour and baking powder, using a flour sifter. [title] Add the sugar in the baking powder and flour.

Answer format: ending1/ending2/ending3/ending4