Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to make a plastic bag explode [title] Select your bag. [step] You can use any plastic bag for this experiment. The preferred method is to use a resealable bag so that you don't have any air leaks.

Ending1: This will effectively build the pressure inside the bag, eventually causing it to explode. [substeps] You can use other bags and tie them shut, but this can lead to air leaks that bleed off pressure and prevent your bag from exploding. Ending2: Alternatively, you can use a metal, plastic, or plastic cup, any container with open lid, or any different container you'd use for filling an open pouch or with a lid. [substeps] Cool air will affect the bag's magical power, so choose what you want on your bag. Ending3: The bag should be either as big or smaller than you are comfortable wearing, so be sure it's a truly durable bag. [substeps] Other than bags that can easily be stored and stored, other " safe " bags also work well for this experiment. Ending4: You can also use an empty zipper bag or a cardboard tube that has been previously taped to its lid using duct tape. Either way, make sure that the bag you use has a balloon opening so that air can escape.

Answer format: ending1/ending2/ending3/ending4