Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to use a kick board [title] Rest your chest on top of the kickboard. [step] Positioning your upper body on the kickboard will help you float so you can learn to kick your legs while swimming. Place your chest on top of the kickboard so that your ribs are supported while your stomach is in the water.

Ending1: [title] Hold the kickboard in both hands. [step] You can put your hands through the holes in the kickboard, if applicable. Ending2: [substeps] Place your hands on either side of the kickboard from front to back and keep your head in the water. You should be covering your body completely with the kickboard. Ending3: [substeps] The kickboard should be positioned in the same spot on your body that it was on when you were first learning how to kick. [title] Extend your leg or arm behind you, up and toward the front of the board. Ending4: [title] Bend your arms and legs, bringing them above your head. [step] Pull your knees toward your chest, then use them to lift your upper body up in the water.

Answer format: ending1/ending2/ending3/ending4