Please choose the correct ending to complete the given sentence: Health: [header] How to make homemade febreze spray [title] Boil the water. [step] Measure the water into a saucepan. Bring the water to a boil over medium-high heat.

Ending1: Cover the pan and let it simmer for 12 minutes. After 12 minutes, reduce the heat to a simmer and let the alcohol evaporate. Ending2: When the water is at a rolling boil, turn off the heat and remove the pan from the hot element. It's important to dissolve the other ingredients in boiling water first, otherwise your air freshener may leave a residue around the house. Ending3: [title] Set aside the measured water for later use. [step] As soon as the water is boiling, add the febreze leaves. Ending4: The water will not boil as it heats, so try to keep the temperature of the water at a comfortable level. When the water boils, add the febreze seasoning.

Answer format: ending1/ending2/ending3/ending4