Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to clean trout for cooking [title] Insert the tip of your knife into the exit hole. [step] Hold the trout by its dorsal edge and turn it over to expose the belly. You'll find the exit hole near the tail end of the fish just under the lower fins.

Ending1: One side of the stomach protrudes out through this opening. Place the tip of your knife on this hole. Ending2: Point the blade toward the head, then slide it in smoothly. [substeps] To dress a fish quickly and efficiently, it's important to use a sharp filleting knife that offers a little flexibility. Ending3: Place the tip of your knife within that hole to poke several holes into the flesh of trout. [substeps] A knife with a plunger inserted halfway through it will cut through the flesh more easily than a shark knife. Ending4: Turn it over again with your other hand, then slide your knife slightly over the fishtail end. Pull the tail straight out to reveal the fish's loin.

Answer format: ending1/ending2/ending3/ending4