Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to feed deer [title] Introduce deer to a new diet slowly. [step] It takes deer take 2-4 weeks to adjust to a new diet, so start feeding them gradually. Slowly introducing new types of food into a deer's diet will help their digestive system learn to process it.

Ending1: Try to start feeding a deer twice a day, if possible. If you have a houserabbit, start by allowing them a few days to get used to the new food. Ending2: Deer typically eat woody vegetation that is found in forests, so feeding them foods that are rich in fats and carbohydrates can be extremely harmful. [substeps] Begin introducing new foods by combining supplemental foods with deer's natural diet. Ending3: If you start the process a few weeks ahead of their digestion is best. Continue to feed new kinds of food to your deer as necessary until they adjust to the new diet. Ending4: [substeps] If feeding deer fresh shoots from your plant, break them apart with a knife. This will make it easier for the deer to squeeze its favorite meal out of them.

Answer format: ending1/ending2/ending3/ending4