Please choose the correct solution to the question: For an upside down tomato planter

Solution1: Just save your plastic soda bottles, cut the bottoms off, ease in a tomato plant seedling, and pour in some earth. Then hang it up, water it regularly, and watch your tomatoes grow!

Solution2: Just save your plastic soda cans, cut the bottoms off, ease in a tomato plant seedling, and pour in some earth. Then hang it up, water it regularly, and watch your tomatoes grow!

Answer format: solution1/solution2
Answer: solution1