Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to create invisible shelves [title] Choose a suitable book that you won't want to read ever again. [step] This will become the " sacrificial " book that makes the shelf. Since it will be supporting other books, a large, hardcover book works best.

Ending1: [title] Trace an l-bracket onto the inside of the book. [substeps] Open the sacrificial book's back cover and use your tape measure to find the halfway point. Ending2: You might also consider buying digital paperbacks so you can create shelves that will all be created the same way (via combining other books you have available). [title] Wrap masking tape around the front cover to give your book some heft. Ending3: You can also substitute a bookshelf storage container or individual display. [substeps] Encourage the people in your home who sell books to try and put their books away electronically and store them in a safe, separate box so you don't have access to them. Ending4: [title] Paint a label on the front of the book which says " invisible shelves. [step] " the label should indicate the format of the information it contains.

Answer format: ending1/ending2/ending3/ending4