Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to wash acrylic fibers [title] Pretreat any stains. [step] You can't rely on detergent alone to get out a big stain on your acrylic clothes. Hit the spot with a spray stain remover and rub the remover in with your fingers so you know it's really worked in the fabric.

Ending1: Since acrylic fabric is a delicate fabric, you can use a different type of stain remover. The process will take longer if the stain is old and still in the fabric, and there won't be a residue from it on the acrylic pieces. Ending2: [substeps] Don't forget to spray the stain remover on the inside of the clothing too. If it's a really old or stubborn stain, try scrubbing the remover in lightly with an old--but clean--toothbrush. Ending3: [title] Soak your acrylic in warm, soapy water for 2-3 minutes before rinsing. [step] This helps spread the remover and protect your clothing and the fibers from stain drippings. Ending4: It will probably turn the stain white or orange. Other acrylic stains will require a little prep before they can be scrubbed.

Answer format: ending1/ending2/ending3/ending4