Please choose the correct ending to complete the given sentence: Health: [header] How to read a tuberculosis skin test [title] Go to your doctor for the tuberculosis skin test. [step] You will be given an injection of a purified protein derivative into the inner forearm that will result in a 6-10 mm welt that will disappear within a few hours. [title] Leave your arm uncovered.

Ending1: [step] If at some point you come in contact with a rash, do not touch it in some way. You should avoid touching your face for at least 6-12 hours. Ending2: [step] Do not place a bandage over the site of the test for the required 48 to 72 hours. You can wash and dry your arm carefully. Ending3: [step] Open the check box or window in order to expose the paper of the tuberculosis test. [title] Set the tip of your fingers against the urethra or toenail. Ending4: [step] For best results, leave your elbow and hand inside the sleeve for 30 minutes for every hour you lie in bed. You do not need to use soap and shampoo during this time, as your reaction is more likely to be sustained by washing.

Answer format: ending1/ending2/ending3/ending4