Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make cauliflower cheese [title] Preheat the oven. [step] To ensure that your oven is properly heated when the cauliflower cheese casserole is ready to bake, it's important to preheat it. Set the temperature to 400 degrees fahrenheit (200 degrees celsius), and allow it to fully heat.

Ending1: [substeps] Keep an eye on your oven so you know when it's reached the correct temperature. Most models will sound an alert or flash a light to let you know that they're preheated. Ending2: [substeps] Don't forget to check the oven a few minutes before the casserole is ready. Make sure that it's heating evenly before moving it to the oven. Ending3: [substeps] Recipes that call for basted ahead of time vary between oven temperatures. Make sure to consult a recipe guide to learn how to get the exact temperature you need. Ending4: At this time, stir in your ingredients. [title] Whisk together the dry ingredients and chicken.

Answer format: ending1/ending2/ending3/ending4