Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to store collard greens [title] Do not wash the collard greens. [step] If you plan on using your collard greens within the next week, don't wash them before refrigeration. Introducing water to the greens can promote decay, cutting the length of their freshness down dramatically.

Ending1: [title] Place the collard greens in the freezer for 10-12 hours. [step] They should be hard and firm, but be conscious of your hands; they might chip or split, and retain white coloring. Ending2: [substeps] Collard greens should only be kept briefly-a few days for great flavor, or a few weeks for outstanding color. Check the tag and package to see how long the greens should take to reach their original state, as well as whether you need to allow any warm water to refrigerate them. Ending3: [substeps] If you are concerned that your greens are too dirty to store in your refrigerator, know that they will be stored in an air-tight bag. Any dirt and grit will not get onto the surfaces in your fridge. Ending4: [substeps] Organic collard greens should not be thrown away. Those that aren't organic are considered veggable.

Answer format: ending1/ending2/ending3/ending4