Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make cheeseburger salad [title] Cook and season the ground beef. [step] Place 2 pounds (0.9 kg) of ground beef in a large skillet over medium heat. Break up the meat with a heat-proof spoon as it cooks.

Ending1: Add 1 cup (250 ml) of red meat and cook for 30 to 60 seconds. [substeps] Remove the beef from the heat and let it rest for about 5 minutes to season. Ending2: [title] Season the beef and cook the dressing. [step] Combine all of the ingredients in a separate small bowl and use your hand to combine all of the dressing. Ending3: Once the beef is completely cooked and brown, scoop out the meat and drain the grease out of the pan. Return the meat to the pan and stir in the seasonings. Ending4: [substeps] If you don't have access to a heat-proof skillet, cover the top of the skillet with aluminum foil. [title] Cook and stir fry the ground beef.

Answer format: ending1/ending2/ending3/ending4