Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to remove wallpaper with the dif method [title] Perforate the wall. [step] It is important that you do not " score " the wall, as this will damage the wall and cause the paper to come off in small strips. Specialized tools are available at your local hardware store.

Ending1: [substeps] To use the dif method, place a nail through the wall. Insert a plastic bar at either end of the bar and push down on the bar. Ending2: These will range from the garden tool to a knife. Apply pressure according to the instructions on the tool and remove any remaining wallpaper. Ending3: These tools can also cost you money, as they are less expensive and easier to use. [substeps] The method allows you to cut through the wallpaper without any effort. Ending4: Look for tools which have spur-like wheels on them. These tools will perforate the wall with thousands of little dots, so that the dif can soak in.

Answer format: ending1/ending2/ending3/ending4