Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to mix light to make colors [title] Gather your materials. [step] You will need three flashlights, colored cellophane (red, green, and blue), three rubber bands, and a white wall. Try to use similar flashlights.

Ending1: This will help keep the intensity of each light roughly the same. [substeps] A large sheet of white posterboard or several pieces of white copy paper can be used in place of a white wall. Ending2: Many people mistake a white poster or cardboard box for orange paint, so choose what you think would be the best color for your paint. Mix enough to make a 2:1 ratio of light and red. Ending3: You can also use various colored pencils, crayons, markers, and erasers. [substeps] If you can't find any of these supplies, you can use your jewelry, an old toothbrush, or a pink lip gloss (try to match it to your color scheme). Ending4: [substeps] Find something wooden, such as a wood table, to push shades and other colors onto. Find an reflective surface, such as a layer of paper or a basement floor.

Answer format: ending1/ending2/ending3/ending4