Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to balance the diet of rabbits [title] Consider your rabbit's age. [step] Age makes a big difference in how you should feed a rabbit; it will be mentioned in the following steps. [title] Give your rabbit unlimited hay.

Ending1: [step] Feed your rabbit unlimited hay by making a deposit out of aluminum foil or twine. Alternatively, you can use old hay made from hiding branches for a cute profit. Ending2: [step] Place a container to hold the hay in the cage and ensure that it is always full of fresh, mold-free hay. [substeps] Rabbits under seven months should be fed alfalfa hay; rabbits over seven months should be fed timothy hay. Ending3: [step] Rabbits need large quantities of hay, so make sure you are giving your rabbit equal amounts. Also, be sure you give your rabbit enough food to pass the time. Ending4: [step] Rabbits are 13 to 16 months old, and need hay for growth. Timothy hay works well, or however you want it.

Answer format: ending1/ending2/ending3/ending4