Multi-select problem: How does the next paragraph end?

How to remove chewing gum from cotton
Make an ice cube sandwich.
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.

Available choices:
(1). 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.;
(2). 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.;
(3). If you didn't use any store-bought gum, a dab of ice cubes is fine. Give the gum a stir with a fork.;
(4). 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.;
(1).