Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to teach your dog to sit with a clicker [title] Bond with your dog before training. [step] He or she will pay better attention and will be more eager to please. [title] Gather some small treats and a clicker.

Ending1: [step] Make sure the treats are soft enough to be used, and at least a quarter to one inch from the end of the clicker. Make sure to point the clicker at your dog in a safe, well lit area so that you can see him or her when you place the treat in the clicker. Ending2: [step] If you don't have a clicker, a retractable pen will work the same. Eventually the dog will respond to the' click' sound and know that treats will follow. Ending3: [step] The easiest way to train your dog is to use a clicker, not a biscuit; a regular biscuit or biscuit cutter can work, as long as the squares are small enough. [title] Turn on your clicker and hold it over the top of your dog's mouth. Ending4: [step] Pick up a brush and put a few items in it. Use the brush or clicker to mark where you want your dog to sit.

Answer format: ending1/ending2/ending3/ending4