Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to ski moguls [title] Use stiff skis with flexible tips. [step] Stiff skis have a large turning radius and they will help you brake and slow down. The flexible tips aid you in maneuvering around each of the moguls with ease! [substeps] Shorter skis will allow you to make tighter turns, but will help out less when you try to slow down.

Ending1: [title] Keep your upper body upright and your arms out in front of you. [step] The majority of your body motion will come from keeping your legs relaxed as you ride over each bump. Ending2: They are less likely to fall off in the snow. [title] Avoid skis with sharp ends or dull tips. Ending3: [title] Pick a balance disk, if you have one. [step] Balance disks are curved disks sitting horizontally over a round barrel-like base that is really a support disk. Ending4: You can usually get by with longer, thicker skis, but thinner ones provide a smoother snow. [title] Make sure the ski area is clear.

Answer format: ending1/ending2/ending3/ending4