Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to sort cows [title] Set up pens and corrals for cattle to be sorted into. [step] You cannot do any sorting without having other corrals to put separated cattle into. If you are wanting to hold them for a length of time, they will need watering facilities and a feeding and bedding area.

Ending1: If possible and necessary, access to separate pastures is also necessary to keep the groups from mixing. [substeps] This step will take significant amount of time to plan and do especially if you don't have the facilities set up yet. Ending2: [title] Give each cow a regular ration. [step] A cow with carvediums is food, but you want to replenish a large majority of their resources so they don't starve. Ending3: For a shorter amount of time, they may be gathered together into square sections and placed in a bucket for feeding and being fed. [title] Start in a large, well placed pen or stall with air holes wide enough for everybody to fit. Ending4: Purchase cow-proof or vet safe pens with ventilation holes. Clean these pens well and keep them free of foul odors while you are transporting and fostering them.

Answer format: ending1/ending2/ending3/ending4