Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to manual easily on a skateboard [title] Get good foot position. [step] Have the edge of your back foot nicely lined up with the tail, but with your shoe still completely on the board except your heel. As this is all about balance and endurance, you will need to keep a proper stance throughout the entire manual.

Ending1: [substeps] Stand with your feet three feet apart. Raise your heels to hip height and place your arms horizontally on the ground to stabilize your body, feet in front of you. Ending2: [title] Wrap your arm around the center of the skateboard, and be sure to place your hand firmly on the tail. [step] That will get you in the correct position to pedal. Ending3: In this setup, you are going to be balanced on the board with your feet about shoulder-width apart and your knees slightly bent. Your skate should be as tight as possible. Ending4: It will shift as your weight does and the ground surface changes depending on inclines or declines. Stay on the balls of your feet and your toes and strain them hard when you actually start the manual.

Answer format: ending1/ending2/ending3/ending4