Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to propagate a grapevine from store bought grapes [title] Buy a bag of grapes attached with a decent length of vine. [step] You can buy whichever type of grape you want. [title] Find a vine with grapes on it.

Ending1: [step] Small, but pointy, vine types are perfect. [title] Place the vine roots-side down on a strip of foil tape. Ending2: [step] To use, you can slice a vine into strips. Make sure the first strip of vine has 1 flat side and 1 thick side. Ending3: [step] If you have a lot of grapes that you'd like to grow from this particular vine, use a size 22-16 vine. [title] Use a rosiner or rorosiner to kill the grapes. Ending4: [step] Look for some grapes with a long green vine. [title] Remove the grapes from the vine until there is only the vine left.

Answer format: ending1/ending2/ending3/ending4