Please choose the correct ending to complete the given sentence: Health: [header] How to use steam to relieve sinus pressure [title] Fill a one-quart pot with water. [step] Boil the water on the stove for a minute or two or until it is steaming vigorously. Then remove the pot from the heat.

Ending1: [title] Add four tablespoons of olive oil. [step] Pour 3 tablespoons (43 g) of olive oil into a clean pot with water. Ending2: [substeps] You can use a steam-powered stir-stick or a kettle. [title] Add one quart of room temperature water to the pan. Ending3: Add enough brown sugar to make 3 tablespoons. [substeps] Add 1 teaspoon of salt to the water. Ending4: [substeps] Place the hot pot on a heat resistant mat on a table. Keep any children away from the pot while it is boiling and while it is steaming.

Answer format: ending1/ending2/ending3/ending4