Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to repair a punctured tire [title] Locate the tire that is losing air. [step] Remove your valve caps first. You can either find the hole by looking for the nail that is pierced through the tire, or you can put the tire in a tub of water and roll it around in driving rotation.

Ending1: [title] Check if the tire is inflated due to an air leak. [step] While some tires will stop producing air when they're inflated, others will not stop until they drain from the valve. Ending2: [title] Loosen the tire's tip end bolt. [step] Usually, the puncture line is located at the lowest point of the tire's rim. Ending3: There should be air bubbles where the hole is. [title] Take the tire off from the rim. Ending4: [title] Rip the bottom of the valve caps away from each other. [step] Just enough to enable air to escape from the punctured tire.

Answer format: ending1/ending2/ending3/ending4