Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to build vegetable garden boxes [title] Make sure that your garden box will be able to drain. [step] Do not put garden boxes on surfaces that will not absorb the water that runs through your garden box. For example, tarmac and concrete are not ideal surfaces for a garden box.

Ending1: [title] Find a brick wall that will run into the wall. [step] Any brick wall will work, but if you plan on investing in a brick wall, then a brick is the best choice as it can run up the wall without flooding the space. Ending2: [substeps] If your garden box is not mechanically-driven, you should make sure that the location you are designing is ideal for drainage. [title] Add 3-4 inches (7.6-15. Ending3: [substeps] If you plan to place the box on a surface that was previously turfed, remove the turf by peeling it back with a spade. [title] Add grit to soil that doesn't drain well. Ending4: Chickens will also be difficult to build a vegetable garden box with and you should find spare materials to cut out of this material. Use a garden box with a 1 foot (0.61 m) diameter, i.e., a 4 inch (10.16 cm) diameter.

Answer format: ending1/ending2/ending3/ending4