Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to prevent laminitis in horses [title] Store grain and feed securely so that horses can't get to it. [step] Horses like to eat, and if they find a bag of oats left unattended, they will consume the entire bag, which could cause horse laminitis. [substeps] Use plastic storage bins with locking tops.

Ending1: Do not open the bins so that you must bring one bag inside of two. The farther away you put the grain, the more dangerous it is for the horses to get to the grain before the oats have a chance to cool. Ending2: These can be attached to the horse's mouth to make it easier to feed. Always keep a compost or manure bag within reach, as horses have an inherently strong mouth to eat. Ending3: Clamp or screw in food tightly against the latch to prevent it from unlatching as soon as it enters the shipping container. Discourage the horse from eating anything from the freezer, whether its favorite candy or treats. Ending4: This will keep horses, mice and other rodents out of the grain. Keep the grain containers behind a closed door, such as in a tack room or storage shed.

Answer format: ending1/ending2/ending3/ending4