Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to measure for stirrup length [title] Secure your horse or pony. [step] Tie the pony or horse to a post, rail, or crossties before beginning your stirrup adjustments. Never leave your horse or pony untied while moving the stirrups up or down.

Ending1: Whenn't riding, remember to prepare your horse/pony for daily riding. [substeps] If you must ride, take your left foot off the stirrup and the right foot off the saddle. Ending2: [substeps] Alternatively, can have someone else hold the horse in place while you adjust the stirrups. [title] Check that the saddle is on correctly. Ending3: [substeps] While mounting rides, remember that if your horse and rider would like an appropriate length, shorten their stirrups. Also remember, horses should not depend on width. Ending4: [title] Stand with your feet shoulder width apart. [step] Try to stand with your heels a little wider than your hips.

Answer format: ending1/ending2/ending3/ending4