Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to build a rabbit condo [title] Plan a design. [step] Purchase two boxes of wire storage cubes. Once you remove all of the wire mesh grids from the boxes of storage cubes, you'll know how many you have to use.

Ending1: You may already have a hutch-like structure, but if you decide to build a hutch for your rabbit, you'll need a frame, tote bag, and a wheels, as well as some boxes and wheels. [title] Choose a source for the hutch. Ending2: [substeps] Choose 1 square foot for the bottom of the square box , 1 square foot for the sides , 1 square foot for the roof, and 1 square foot for the sides of the box. Before you begin, use your visualization tool to draw a form into the box that is roughly 5 pixels by 3 pixels. Ending3: [substeps] Since rabbits love cardboard boxes, buy two boxes of varying size. However, if you use two, multiply the number by 2. Ending4: Each grid square will likely be 13 " x13 " or 14 " x14 " depending on the brand you buy. [substeps] A common design may consist of front and back walls that are both three grids high and three grids long with the side walls being three grids high and two grids deep.

Answer format: ending1/ending2/ending3/ending4