Please choose the correct ending to complete the given sentence: Relationships: [header] How to fist bump [title] Ball your hand up into a fist. [step] Press the tips of your fingers into your palm so that your hand makes a fist. This will be the position that you keep your hand in for the bump.

Ending1: Hold the fist up high enough to extend your palm to one side. Bend your wrist so that both fingers are pointing out, with the whites of your knuckles showing. Ending2: [title] Put your fist out in front of you. [step] Place your fist in front of your body with your knuckles facing up. Ending3: Make sure your palm looks nice and flat. Ideally, this hand should be neither thicker nor thinner than your fist. Ending4: [substeps] Whether you're with friends or with an opponent, the fist looks like a punching bag in a gym. The knuckles, the tips, and thumb look like a regular ring finger.

Answer format: ending1/ending2/ending3/ending4