Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to fold a futon [title] Pull the top section of a bifold futon up. [step] This is the section where your back goes when you're sitting on the futon. Grasp the top of the frame and pull it up gently until it clicks into place.

Ending1: [title] Pull the bottom section of the bifold futon in a horizontal position. [step] The front section of the futon should be facing you, with the spine of the face down. Ending2: [substeps] It's important that you keep your arms by your sides as you pull it into place. Otherwise, it may not work as well as it used to be. Ending3: [title] Pin the top section with a sewing stitch. [step] Sew a stitch around the edge of the bifold futon first. Ending4: [substeps] A few bifold futons may have different seat adjustment options, making it easy to lock them in place just like you would a chaise lounge. [title] Push down on the bifold's seat section.

Answer format: ending1/ending2/ending3/ending4