Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a strawberry scrunch [title] Preheat the oven to 180 ° c (356 ° f). [title] Mix together the oats, flour, digestive biscuits, sugar, and melted butter in a bowl. [step] Use your hands to press it in firmly.

Ending1: [title] Add the oat mixture into a baking pan. [title] Bake the oat mixture for about 20 minutes. Ending2: The mixture should start to form a thick foam. [title] Apply the jelly when you're done. Ending3: [title] Wrap the mixture in plastic wrap and put it in the freezer for an hour. [step] It is important that it is completely chilled. Ending4: [title] Let the mixture stand for around 20 minutes. [step] The oats are less sticky than flour, so have plenty to spare.

Answer format: ending1/ending2/ending3/ending4