Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to install travertine tile [title] Remove any previous covering. [step] Regardless of whether you are tiling a floor or a backsplash, you will have to remove any previous covering. This can include pulling up carpet or vinyl flooring, removing previous tile flooring, taking down wallpaper, etc.

Ending1: [substeps] Many of these removal jobs can be a project unto themselves, but you can find help at how to: remove floor tile, take out carpet, and remove wallpaper. [title] Measure the area you intend to tile. Ending2: [title] Work on both sides of the room. [step] Scuffing mortar can cause intense cracks, so backsplash mortar should be removed whenever possible. Ending3: [title] Measure out an area you will be tiling. [step] It is important that you ensure an area at least four feet (1.5 m) long. Ending4: [title] Begin tiling with a tile stain or stain removal agent. [step] Consult an acrylic stain remover or stain removal agent before proceeding with tiling.

Answer format: ending1/ending2/ending3/ending4