Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to shoot a revolver [title] Learn the proper safety measures. [step] Before you even begin loading your revolver, you should read and comply with common gun safety measures. [substeps] Always keep the gun pointed in a safe direction.

Ending1: Some modern guns can be fired at a lower elevation or lower. Some require you to stand approximately six inches above the gun after each shot. Ending2: If the gun is moving during the maneuver, the bullet may travel in the direction it is not intended to go. If you are using this method, you can learn which objects keep the gun pointed. Ending3: If you aren't sure where to shoot, bring a hat or dust mask with you when you get outdoors. To keep your gun safe while your mobility test class is cancelled, you should begin with this option. Ending4: A safe direction means that the gun is pointed in such a way that an accidental fire would not cause any harm. Obey the step until it becomes second nature to keep the gun pointed in a safe direction, even when you know the gun is unloaded.

Answer format: ending1/ending2/ending3/ending4