Please choose the correct ending to complete the given sentence: Health: [header] How to kill norovirus [title] Wash your hands thoroughly. [step] If you think you may have come into contact with the virus, you must wash your hands thoroughly to avoid the spread of infection. To wash your hands to avoid contamination, use soap and hot water.

Ending1: Wash your hands in the shower, in the bathtub, or under running water. [title] Wet a cotton ball with the most commonly used soap. Ending2: [substeps] You also might use essential oils like lemon, eucalyptus oil, or bergamot oil instead of regular hand soap. Hand soap should be available at most pharmacies, plus you can purchase specialized soap that will work in your particular situation. Ending3: [substeps] Avoid washing your hands after touching a heated or warm-up flame to the areas where you are sexually intimate. [title] Wear clothing that you do not want to catch in fire. Ending4: Alcohol hand sanitizer is generally considered ineffective against this particular kind of virus. You should wash your hands if : [substeps] You have come into contact with someone who has norovirus.

Answer format: ending1/ending2/ending3/ending4