Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to care for bernese mountain dogs [title] Feed her the right food. [step] Bernese mountain dogs have special dietary needs. Since they are so large, these dogs need a dog food that is high-quality and provides a balance of nutrients.

Ending1: As well, they are sensitive to any ultraviolet light, and good quality dog food may be highly recommended. [substeps] Make sure that the food you choose is low in sugar and is low in fat. Ending2: Look for dog foods that have real ingredients instead of fillers. The first three or four ingredients should be meat and vegetables. Ending3: One of the most important ingredients in proper diet for bernese mountain dogs is consistency. To feed them a proper diet, choose an older dog food and do not use a larger food with a high water content. Ending4: [substeps] Make sure that the food you feed your bernese mountain dog is at least 15 grams per gram. You will want to make sure that the food you feed her is certified as safe for your dog.

Answer format: ending1/ending2/ending3/ending4