Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to varnish raw and unfinished wooden furniture [title] Prepare a work area that is well-ventilated. [step] The room or workshop you will be working in has to be the correct temperature so that the varnish will dry properly-at least 70 ° f (21.1 ° c). [title] Keep your piece of furniture out of direct sunlight so that the varnish doesn't dry too fast.

Ending1: [step] There are many online resources where you can purchase varnish specifically for the job. Many experts agree that varnish will dry quicker if you place it in a well-ventilated area. Ending2: [step] Provide ventilation devices which to ventilate heat-affected areas. Use several heat-treated fans to maintain the temperature between 65-75 ° f (16-21 ° c). Ending3: [title] Smooth all rough surfaces with a very fine grade of sandpaper. [step] Sand with the grain; if you sand against the grain, you will damage the wood. Ending4: [step] Choose a room that is either well-lit or that is away from windows. Put a drop cloth under where your workbench or/or sitting area will be for a direct light.

Answer format: ending1/ending2/ending3/ending4