Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to apply tung oil [title] Clean the wood surface with a damp cloth. [step] Wet the cloth with warm water and wring out the excess moisture. Wipe down the wood using long, linear strokes or smooth circles, working against the grain.

Ending1: The grain should remain the same throughout all the efforts. [substeps] Note that the tung oil can be abrasive, so you'll need to dry the wood before applying another varnish or finish. Ending2: [substeps] If you're concerned about fading the finish, skip this step and go clean again with a different toner at the end of each oil rub. [title] Mix the tung oil with your household uv-rich soap. Ending3: Do not use the grain of the wood; the rougher the grain, the harder it is to apply oil. When finished, you will have a richly-weathered surface, with a sheen that will allow you to apply oil directly to the wood. Ending4: When you're done, give the surface a few minutes to dry to the touch. [substeps] Your wood surface needs to be free of dust, dirt, oil and other messes in order for the tung oil to set up properly.

Answer format: ending1/ending2/ending3/ending4