Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to clean gunk from your cat's eyes [title] Boil the water. [step] You will need access to sterilized water for this method, as you want to be sure you are cleaning your cat's eyes with the cleanest materials possible. Boil water on the stove or in a kettle.

Ending1: Then, let it cool to room temperature. [substeps] Pour the water in two small bowls and place them close to you so you can access them easily. Ending2: You may need to boil it two times before you can get your cat to breathe again. [substeps] To get started, fill a bowl with water and put the tweezers into it. Ending3: [substeps] Some people choose to boil the water in a pan instead, but this option is usually quicker. [title] Lather up the gunk with a citrus scented soap. Ending4: [title] Add the medicated paste into the water. [step] Once the water is boiling for a few seconds, add the paste to the water.

Answer format: ending1/ending2/ending3/ending4