Please choose the correct solution to the question: How do you layers of fabric together

Solution1: Lay each layer of fabric one on top of the other, insert a sewing pin straight through the layers of fabric, then a few milimeters below the hole poke it back up through all the layers of fabric.

Solution2: Lay each layer of fabric one on top of the other, insert a clothes pin straight through the layers of fabric, then a few milimeters below the hole poke it back up through all the layers of fabric.

Answer format: solution1/solution2
Answer: solution1