Please choose the correct solution to the question: To make a window greenhouse, what kind of bin do I need to use?

Solution1: You need to use a rectangular plastic bin that has an edge and will fit into your window. It should be about two feet deep.

Solution2: You need to use a circular plastic bin that has an edge and will fit into your window. It should be about two feet deep.

Answer format: solution1/solution2
Answer: solution1