Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to encapsulate your crawlspace [title] Provide lighting throughout your crawlspace. [step] Natural light is best, and many crawlspaces have vents that can be opened or removed to let light in. Alternatively, you can place several crawlspace lights, battery-powered lanterns, or other light sources under your home so you'll have plenty of light when you start your work.

Ending1: Fluorescent lamps can provide 7 to 10 watts per watt. [substeps] You can purchase fluorescent lamps at hardware stores. Ending2: [substeps] Without light, you won't be able to properly fit a vapor barrier and do other work you'll need to complete. [title] Remove old vapor barriers or foundation insulation. Ending3: [title] Place outdoor heating pads and furnaces. [step] These devices provide unique lights which make doing a system-finding job like this a lot easier. Ending4: [title] Remove all the knobs and hinges. [step] Most crawlspaces have knobs and hinges or any combination of these basic items that you can unscrew and loosen to release the pieces of the crawlspace.

Answer format: ending1/ending2/ending3/ending4