Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make stuffed zucchini [title] Preheat your oven to 350ºf (175ºc). [title] Cook the beef. [step] Place some olive oil on a skillet and cook and stir the ground beef until it's nice and browned, for about 10 minutes.

Ending1: [substeps] The stir-fry should reach a depth of 520 degrees fahrenheit (40ºf). Or, if you live in a hotter area, light ten minutes at a time and cook until hot enough to fry. Ending2: [title] Lay the zucchini with the olive oil on top of the beef. [step] Spread it out so that it's raised up a little bit, if you want a bit of firmness. Ending3: You can break up the beef as it crumbles while it cooks. Drain the extra fat from the beef and move it to a mixing bowl, using a slotted spoon. Ending4: [title] Drain the beef and transfer it to a serving bowl. [step] If you like, you can sprinkle the meat with finely chopped, fresh garlic cloves or tomato sticks.

Answer format: ending1/ending2/ending3/ending4