Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to chalk a baseball field [title] Use a line chalker. [step] Line chalkers are small devices used to apply chalk to baseball fields. There are many varieties of line chalkers available, and specific directions for use vary with the product you purchase.

Ending1: [substeps] Line chalkers pass the line in front of the ball, second from the pitching line, through the concrete surface and walls of the field. Line chalkers remove grit from the surfaces of the concrete, which a regulation chalk perimeter is and can then easily wipe off with a sweep. Ending2: Generally, though, you can just fill the device with marking chalk, then set it to your preferred width and wheel it across the baseball field. [substeps] Line chalkers can often be set to make either a two-inch (five cm) or four-inch (10 cm) line. Ending3: [substeps] This method is best when you first start. If you don't know how to use your line chalker, you'll have to focus on using a metal line chalker which is available at a sporting goods store. Ending4: [substeps] For example, if you want to begin the chalk sweeping effect on a baseball field you'll need to learn how to execute the chalk sweeping motion on a baseball field. You can use lines chalker can help train a coach in visual memorization, so make sure you figure out the operating concepts carefully when you're practicing.

Answer format: ending1/ending2/ending3/ending4