Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to gusset pants [title] Open up the seam of your pants (optional). [step] If you are adding a gusset to finished pants, then you will need to open up the seam to make room for the gusset. Use a seam ripper to open up the seams around the crotch area.

Ending1: Once the seam is open you will find the bottom button of your pants. [title] Dab the gusset into the hole. Ending2: After the gusset is put back in, carefully peel the newly revealed seam to make sure nothing is missing. [substeps] Be sure to do this in a discreet place. Ending3: Seam rippers look like a two pronged fork with two different sized prongs. Use the long point of the seam ripper to catch stitches and the blade in the center of the two prongs will cut the seam. Ending4: There will be some stitching and threading to do later. [title] Align the gusset with the seam you took out.

Answer format: ending1/ending2/ending3/ending4