Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to feed a horse [title] Provide your horse with plenty of fresh, clean water. [step] Horses require between 5-15 gallons of water per day. If possible, make sure that your horse has access to water at all times.

Ending1: [substeps] Clean the water away from the equine's face. This helps clean its skin and helps get rid of bacteria that can build up on face. Ending2: Increase the water that you give your horse when you feed him-you may also consider taking your horse out to graze outside of your pasture to increase his water intake. You may also consider submerging your horse's hoof in a bucket of clean water, splashing water over him, and shaking off any dirt from his hooves before feeding. Ending3: Otherwise, make sure that you water your horse at least twice per day and allow several minutes for your horse to drink. [substeps] Make sure that the water in your horse's trough is clean and not frozen. Ending4: If you're not sure, ask your vet to recommend a water source in your stable. [title] Feed your horse with long-handled instruments, such as a hoof pick, a medium size meat tenderizer, and a halter.

Answer format: ending1/ending2/ending3/ending4