Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to train a horse to jump [title] Make sure you have the required items. [step] You'll need cavaletti poles, jump standards, boots to protect your horse's pasterns, and a suitable saddle for jumping. If you don't have a cavaletti just use wood poles or tree branches.

Ending1: [substeps] Use heavier weight poles (not pvc pipes or bamboo) so if your horse hits one of the poles he will realize that hitting them is uncomfortable. [title] Set the cavaletti poles on the ground. Ending2: These can be safely purchased at a hardware store or online. [title] Place the pole into the ground right before you mount. Ending3: You may also want to add two bench rest rails to your nearest horse store and have extra boards or saddle-boxes available if you have several horses. [title] Hire a professional capuchin for lessons. Ending4: [title] Make sure you are confident enough to do this. [step] Doing this before a horse jumps can cause him to spook and hurt himself.

Answer format: ending1/ending2/ending3/ending4