Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to snowplow stop in figure skating [title] Mimic the snowplow movement with one foot. [step] Skate to the side of the ice rink and hold on tightly with one hand. Stand next to the rink barrier, and have your feet parallel to the barrier siding.

Ending1: Lean against the barrier, at shoulder height, and lean back as far as you can. Lift your back leg up and lean back as far as possible. Ending2: You might have to practice with both feet before you actually start practicing your snowplow. [substeps] Grasp the pole with one hand and enjoy the thrill of snow plowing. Ending3: Drive both skis into the barrier using one foot. [substeps] Use two hands to hold on to the barrier and the other to play catch. Ending4: Slightly bend your knees and position your feet about 5 inches apart. Put most of your weight on your barrier side foot.

Answer format: ending1/ending2/ending3/ending4