Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to make a mini iceberg [title] Gather the necessary materials. [step] To make a miniature iceberg, you will need a balloon or cup, water, food coloring, and a freezer. The balloon or cup will serve as the base shape for your iceberg.

Ending1: You can choose any container you'd like for the shape of your iceberg. If you want to sculpt your iceberg to make it more realistic use a balloon. Ending2: To make the balloon or cup, you will need to : [substeps] Pour the water into a plastic bag that has a tight fitting lid or rim. Place a 2-oz (237 ml) bottle of vanilla soda into a large freezer bag or cup. Ending3: If your balloon is too heavy to transport, you can use a plastic grocery bag instead. [title] Get some of the following materials : [substeps] A 10-inch by 14-inch square board. Ending4: [title] Cut your balloon or cup pieces into strips. [step] For the round version of the iceberg, use these as the base.

Answer format: ending1/ending2/ending3/ending4