Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a bounty cake [title] Preheat the oven to 180 ° c/350ºf. [step] Grease the baking tin and line with baking paper. [title] Using an electric mixer, whisk the egg whites and salt until stiff. [step] Gradually add the sugar and whisk until stiff and shiny.

Ending1: [substeps] Use a basting stick to beat the egg whites until fluffy. [title] Add the cake flour and baking powder. Ending2: [title] Using a spatula, carefully fold in the coconut. [title] Pour the mixture into the prepared pan. Ending3: [title] Beat the eggs and the flour together. [step] Egg white adds flavour by forming a texture that's reminiscent of moisture. Ending4: [title] Add the flour, baking powder, and vanilla. [step] Whisk constantly so that if you know you're mixing in too much you run the risk of scrambling.

Answer format: ending1/ending2/ending3/ending4