Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to care for a pet fox [title] Build a fenced enclosure. [step] Outdoor foxes must be fenced in, or else they will run off to hunt or explore. Choose an area at least 100 square feet.

Ending1: Purchase a large wire fence to use as a fox enclosure. [substeps] Try to choose a sheltered area protected from wind and direct sun. Ending2: This will help regulate daytime temperature, protect plants, and prevent pests. [substeps] It is also a good idea to install widely spaced indoor fencing so that, if necessary, neighbors or small children can exit your backyard. Ending3: Be sure that it does not require a lot of floor space; outdoor foxes are very intelligent creatures. [title] Provide lots of hiding places for the fox. Ending4: Otherwise, you will have a lot of problems : [substeps] Fences are a must and should not be installed in far away locations. These fences can cause problems if the fox continues to try to run away from them.

Answer format: ending1/ending2/ending3/ending4