Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to stain stone [title] Clean the stone with a stiff wire brush. [step] Take a wire brush and thoroughly scrub the entire surface of your decorative stone. Pay special attention to any areas that are coated in dust or grime, or that have collected debris.

Ending1: Rinse the brush off well with room temperature water when you're finished. [substeps] If the stain is permanent, excess water and dry cleaning products may tarnish the stone. Ending2: [substeps] If you try staining the stone before it's been cleaned, you'll only end up staining the dirt on the stone, which will inevitably fall off. [title] Rinse the interior stone off with a damp rag. Ending3: [substeps] If you have a separate brush, use it to carefully brush any dirt and debris away from the stone using circular motions. Always wipe down your stone in the same area you plan to stain. Ending4: If you want to maintain your stone's look, choose the right brush for your specific stone product. [substeps] If you cannot find wire brush, use a wrinkled cloth instead.

Answer format: ending1/ending2/ending3/ending4