Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to line curtains [title] Select a thermal liner if you'd like to insulate your windows. [step] If your windows are drafty or thin, save on your heating and cooling costs by lining the curtains with a thermal fabric. The insulation will keep heat in your room during the winter while keeping out drafts from the window.

Ending1: Keep this in mind when selecting your thermal liner. [title] Trim the curtains to the correct length. Ending2: It will also keep cool air from escaping during the summer months. [substeps] Most thermal liners are made from cotton, polyester, or a blend. Ending3: [substeps] Unfortunately, there are not many thermal liners available. Some may cost between $20 and $100. Ending4: Because you only have a window with a thermal liner, you won't need to line the windows and ceiling with thermal fabric. [substeps] Foam inner liner is the base for your lining, and wool fabric insulates your windows from chilling drafts while keeping the curtains closed.

Answer format: ending1/ending2/ending3/ending4