Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to stop a cat from scratching a leather sofa [title] Learn about scratching posts. [step] There are different types of materials that cats like to scratch on, including corrugated cardboard, carpeted surfaces, and sisal (a type of rug). Scratching posts can be oriented vertically or horizontally, but cats tend to prefer vertical posts.

Ending1: By using a vertical post, you're able to reduce your cat's desire to scratch the surface. [substeps] Cardboard posts are good for beginners and furniture furniture veterans. Ending2: Look for wobbly, uneven posts or posts that haven't been scraped. [substeps] A ceiling fan is one type of post that cats can sit on and snooze, but they can also sleep with wooden or plastic posts. Ending3: Scratching posts can also come in different shapes and sizes. [substeps] Sisal is a very popular scratching material with cats. Ending4: [substeps] A furniture is typically treated with insulation to prevent scratching and may also conceal cracks and tears in the panels or molding. Where horizontal posts are visible, cats prefer to scratch in an upright position.

Answer format: ending1/ending2/ending3/ending4