Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to desensitize a horse [title] Put a long, comfortable lead on the horse, if possible. [step] Before you begin desensitization training, put a well-fitting halter onto the horse. Attach a long lead that won't tear up your hands if you need to pull it.

Ending1: Pay special attention to the belly, as horses tend to fear wide shoulders and can't tolerate tight saddles. [substeps] Don't sit with your horse. Ending2: [substeps] If you are trying to desensitize the horse to a halter or bridle, see more specific information on haltering an unruly horse and bridling a horse. The steps below may still provide useful information as well. Ending3: Make sure the taut lead is 95% tensile. [substeps] This is especially important if you want to use an easily tensible lead since loose lead lead discharges easily. Ending4: If the horse grooms himself before you try to desensitize it, place the lead on the side the horse is obedient to. Do not stand over the horse at this point.

Answer format: ending1/ending2/ending3/ending4