Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to mount a horse [title] Move your horse into position. [step] Walk your horse out to a level area for mounting. Make sure it isn't cramped, as horses can get claustrophobic easily.

Ending1: When mounted, be sure your lead is snug against your body. Stand (foot slightly forward) with your lead leg outstretched. Ending2: Traditionally, mounting occurs on the left side of a horse, so make sure the horse's left side is clear. [substeps] However, a skilled rider can mount from either side of a horse. Ending3: [title] Adjust the length of your stirrups. [step] Usually, stirrups are shorter so the horse doesn't have to lean slightly in order to reach the mounting area. Ending4: [substeps] If you're training your horse outdoors, this will be your least important element. If you're training your horse indoors, lie your horse down on a sturdy, grassy surface.

Answer format: ending1/ending2/ending3/ending4