Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to cage tomatoes [title] Use metal tomato cages if you don't have a lot of space in your garden. [step] Metal cages are thin and flexible, so you can squeeze them into a smaller space. This is especially helpful if your tomato plants are planted close together.

Ending1: They can also help prevent the tomatoes from fleeing when the weather warms up. [substeps] Metal cages will cost between $10-20 usd per square foot. Ending2: They also insulate the tomato from the elements and help produce oxygen, which will kill the plants. [substeps] Metal cages should also be tall and at least 12-15 feet (3.7-5.7 m) high. Ending3: [title] Get tomato cages that are at least 5 feet (1.5 meters) tall. [step] 5-foot cages will support most tomato varieties. Ending4: [substeps] [title] Space tomatoes in groups of five. [step] A single tomato group of six to ten tomatoes in row is about three to four square feet.

Answer format: ending1/ending2/ending3/ending4