Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to get white clothes white again [title] Soak in baking soda. [step] Combine 4 quarts (4 l) warm water with 1 cup (250 ml) baking soda in a sink or basin, mixing well until the baking soda dissolves. Soak your dingy white clothes in this solution, making sure that each garment is submerged.

Ending1: Allow them to soak for 15 to 20 minutes. [substeps] Baking soda is a strong enough cleaning agent to clean, but it is prone to drying out white items. Ending2: Let it soak for about 8 hours. [substeps] Baking soda deodorizes while it whitens, so this option has multiple benefits. Ending3: This will allow the dye to soak into the fabrics and adhere to the soap. [substeps] Avoid any clothes with delicate fabrics like polyester. Ending4: [substeps] Avoid soaking the whites for more than an hour, as this will remove any oils from your clothes that are beneficial to white's overall appearance. Alternatively, soak your clothing in a dish washing solution, such as 100% natural stain remover.

Answer format: ending1/ending2/ending3/ending4