Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to get blood out of sheets [title] Rinse the stain out from behind using cold water as soon as possible. [step] Take the bed sheet off the mattress first, then rinse the stain out using cold water. Do not use hot water, as this will set the stain.

Ending1: [substeps] Try to rinse the stain out without any moisture in your sheets. Avoid using cold water on silk sheets or towels. Ending2: [substeps] If you notice any bleeding around the bed sheet, stop rinsing immediately. [title] Rub the stain out with an old cloth. Ending3: Follow this step with any of the stain-removal treatments listed below. [title] Treat heavy stains with hydrogen peroxide. Ending4: Once you are finished, dry the area with a clean towel. [title] Open windows in your bedroom to increase air flow.

Answer format: ending1/ending2/ending3/ending4