Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to make marbled chocolate caramel slice [title] Preheat the oven to 350ºf/180ºc. [title] Combine the butter, flour, and superfine sugar in a bowl with your hands. [step] Mix thoroughly until the mixture resembles as fine breadcrumbs and a crumbly " dough ". [title] Press the dough in a pre-greased or non-stick 13 " x9 " (23x33 cm) pan.

Ending1: [step] Bake for about 8-12 minutes. [title] Open the mixture and rub a bit of butter on the top. Ending2: [step] Use the back of a spoon to smooth it evenly into the tin. Use fork prongs to prick all over and bake for 20 minutes. Ending3: [step] This is where the marinate begins. [title] Add the chocolate, milk and sugar mixture to the already softened dough. Ending4: [step] Spoon a square of the mixture and knead for 15 to 30 seconds. [title] Cut up the caramel dough into circles about one inch in diameter.

Answer format: ending1/ending2/ending3/ending4