Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to mountain board [title] Buy a mountain board. [title] Get to the top of the mountain or hill that you are going down. [step] While you're walking up it is important that you scout out the path that you are going to take.

Ending1: If you are going down somewhere steep it will be easier to run. Over time you will run into more steep areas. Ending2: Do not go on a mountain by yourself because any person on the mountain could fall or be injured. [title] Make some rocks for the back of the board. Ending3: This way you can find routes that are safe to take, and keeps you from drowning. [title] Find your next route (s). Ending4: It may just be the difference between a bruised leg and a broken leg. [title] Position the board so that it can't roll down the mountain without you.

Answer format: ending1/ending2/ending3/ending4