Please choose the correct ending to complete the given sentence: Health: [header] How to take out hard contacts [title] Wash your hands with soap and warm water. [step] You must wash your hands with the right kind of soap before removing your contacts. Avoid using deodorant or moisturizing soap.

Ending1: [title] Combine the 3 tablespoons baking soda and table salt in a small bowl. [step] Soak your hands in the baking soda and salt mixture for 30 seconds. Ending2: This can also lead to orthodontic problems. [title] Squeeze out the excess fluid from the contacts. Ending3: You don't want the residue on your contacts. There is also no need to use antibacterial soap because it is no more effective than regular soap. Ending4: The application of soap from your hands may remove the contacts first, and make it easier to remove them later. [substeps] If you're concerned about your contacts losing their firm shape during the process, you can wear them with a hand sanitizer, especially if your contacts are labelled as " infection free.

Answer format: ending1/ending2/ending3/ending4