Please choose the correct ending to complete the given sentence: Holidays and Traditions: [header] How to make a no bake birthday cake [title] Place the biscuits into a re-sealable zipper storage bag. [step] Use a rolling pin to make crumbs out of the biscuits. [title] Melt the butter in a saucepan and stir in the biscuit crumbs you have created.

Ending1: [title] Tip the mixture into the bottom of a 20 cm (7.8 ") flan dish and press it down with the back of a spoon to make a flat base. [step] Set it on the side to cool. Ending2: [step] Add the chocolate chips and mix all of the ingredients together well. [title] Seal the bag and leave it on the bottom rack until cool enough to handle. Ending3: [step] Place the lid on and watch to see that it melts. [title] Watch for bubbles and grated shavings. Ending4: [step] Continue until combined, excluding the vanilla. [substeps] When done, you should have an easier time seeing the cake without the added butter.

Answer format: ending1/ending2/ending3/ending4