Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to remove chewing gum from cotton [title] Make an ice cube sandwich. [step] Soft, mushy chewing gum will harden like a rock when frozen, and be much easier to remove. Often, two ice cubes are all you need to get the job started.

Ending1: [substeps] Lay the gummed up spot of the garment, gum side down, on top of an ice cube. Place a second ice cube on top of the spot. Ending2: [substeps] Each pack of dry ice must be able to hold at least 15 ml (3 %). Using some ice work out how often you have to grind your gum. Ending3: If you didn't use any store-bought gum, a dab of ice cubes is fine. [title] Give the gum a stir with a fork. Ending4: [substeps] If you have gum in the freezer, you can also cut the piece with a grater or file. However, if you don't have freezer-safe cavities, you might also want to check your food sources.

Answer format: ending1/ending2/ending3/ending4