Please choose the correct solution to the question: How do you protect the cover of an old book?

Solution1: Fold a large piece of paper over the outside of the book, bending it into the inside of the front and back cover, then secure with tape.

Solution2: Fold a large piece of paper over the outside of the book, bending it into the inside of the front and back cover, then secure with nails.

Answer format: solution1/solution2
Answer: solution1