Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to clean a blue crab [title] Kill the crab humanely before you remove the shell. [step] If you're using a live blue crab, submerge the crab in a large bowl of ice water for 2-3 minutes to stun it. Then, remove the crab from the ice water and lay it on its back.

Ending1: Use a knife or ice pick to stab the crab through its shell 1 inch (2.5 cm) below its mouth. [substeps] You can also boil the crab for 1 minute to kill it. Ending2: Approach the crab and drop it off the edge of the bowl using a slotted spoon. This should stun it enough to cut through the small head, but it should be killed instantly. Ending3: The crab's shell will be a dark white, sometimes olive-ish color. [substeps] Avoid eating a blue crab who has an intact shell. Ending4: With your hands, gently rub the crab's back with firm scrubbing motions to kill any gills. [substeps] It's best to keep crab away from hot metal-hot metal weakens and limits the crab's airflow.

Answer format: ending1/ending2/ending3/ending4