Please choose the correct solution to the question: How to make a simple key chain?

Solution1: Link together some large paper clips in a circle and then heat them near the middle of each clip so that they adhere to each other, attach your keys

Solution2: Link together some large paper clips in a circle and then heat them near the end of each clip so that they adhere to each other, attach your keys

Answer format: solution1/solution2
Answer: solution2