Please choose the correct ending to complete the given sentence: Health: [header] How to take a spirometry test [title] Avoid activities which might affect your normal lung function. [step] To ensure accurate results, you need to take the following precautions in the hours leading up to the test : [substeps] Ask your healthcare provider which medications you should avoid on the day of the test. Do not smoke within 24 hours of the test.

Ending1: Do not drink caffeinated beverages before the test. [title] Avoid unsupervised swimming or doing heavy lifting. Ending2: Keep a smoke-safe bag inside a bottle of water or else you will come across a gas source that pollutes the air passages. Do not eat or drink something prior to the test that could injure you or others. Ending3: Do not drink alcohol within 4 hours of the test. Do not exercise strenuously within 30 minutes of the test. Ending4: Avoid taking pain relievers (acetaminophen) or avoiding certain foods and drinks. [title] Pick a safe location for the exam.

Answer format: ending1/ending2/ending3/ending4