Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to clean an oven with baking soda [title] Take out the oven racks. [step] You should also remove anything else that is inside the oven, such as pizza stones or oven thermometers. Check to make sure nothing is left inside of the oven before you begin cleaning.

Ending1: [title] Pour the baking soda into a tray or small dish. [step] Measure out the baking soda, then pour it into a small dish. Ending2: [title] Scrape out the loose build-up. [step] You may have a lot of burnt food and build-up in your oven. Ending3: Also, you should make sure that everything is not in a burner. [substeps] If you have an aluminum rack, you can insert a food thermometer into the inside of the oven. Ending4: [substeps] If you have some baking soda left inside of the oven, you don't have to clean it further. [title] Wipe down the oven racks with a damp cloth.

Answer format: ending1/ending2/ending3/ending4