Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to fillet salmon [title] Rinse the salmon in cold running water. [step] Make sure the fish is completely washed on all sides. [title] Open the belly.

Ending1: [step] Place the fish on its side on a large cutting board. Hold the tail down with one hand, and with the other insert a fillet knife into the vent, or the anus, located on the underside of the fish near the tail. Ending2: [step] Take out the tail, but do not lift it out of the water. [title] Place the fish on a cutting board. Ending3: [step] Remove the inner layers of the thickest part of the salmon, using a slotted spoon to pop the belly out of the bones. Then peel and core the fillets on a plastic grocery bag. Ending4: [step] Use a sharp knife to scrape off the hard outer skin. As you peel the tough outer skin, grind it and remove any tough with a finer food processor, blender, or knife.

Answer format: ending1/ending2/ending3/ending4