Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to make feeding comfortable for arthritic dogs [title] Make sure your dog has easy access to their food. [step] Arthritic dogs have trouble getting around. Therefore, it's important you keep your dog's food low to the ground in a spot your dog can easily reach.

Ending1: Always give your dog food on the ground rather than on its food tray. [title] Clean feeding spaces with soap and water. Ending2: [substeps] Place the food level in a location where your dog can easily access it without straining in the process. You don't want your dog to have to stand too high or too low to reach its food. Ending3: Dogs are not more often able to access their food, so if your dog struggles to get to it, it will not keep its feed low. [substeps] In order to keep your dog motivated, you can try feeding them outside when you have chores to do. Ending4: [substeps] Avoid putting the food in a room that must be accessed via stairs or ledges. Arthritic dogs have trouble getting up and down stairs.

Answer format: ending1/ending2/ending3/ending4