Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to darken wood [title] Set up your workstation in a well-ventilated area. [step] Lay down tarp or newspaper to catch wood dust and stain drippings. If you're working inside, open up any windows and use a box fan for air flow.

Ending1: When working outdoors, it's important to air out your chair, bench, or table. [substeps] Additionally, use painter's tape if necessary, since it can leave marks on wood. Ending2: [title] Lay the wood within three inches of the grain. [step] You don't want the wood grain to wrinkle as you work to rub the primer on, so use a face rag for these steps. Ending3: This will help as well, allowing enough ventilation for the work you are going to do. [title] Spray furniture or other nice furniture with furniture-darkening polish. Ending4: [title] Sand the wood using 120-grit sandpaper. [step] Sand in the direction of the grain to avoid leaving scratches on the wood's surface.

Answer format: ending1/ending2/ending3/ending4