Please choose the correct ending to complete the given sentence: Health: [header] How to soothe red and inflamed gums [title] Eat cold foods. [step] Ice, or ice cold foods such as popsicles, will numb the area that is inflamed. If you just need some temporary relief, and you can't get to a dentist right away, use ice to numb the area.

Ending1: [title] Apply a numbing agent to the area. [step] A topical benzocaine ointment, such as those used on babies when they are teething, could help ease the pain temporarily. Ending2: Keep in mind that any other type of cold is normal and won't bother your mouth. [substeps] If the warmth and a cooling effect of the ice is unavailable, try leaving the area frozen until swelling goes down. Ending3: [title] Use an antibacterial mouthwash to rinse out your mouth. [step] Fill a bucket with cool water, and add a little acetone to it. Ending4: [substeps] One good option for soothing red gums is ice. Put ice cubes in ice packs wrapped in a bandage.

Answer format: ending1/ending2/ending3/ending4