Please choose the correct solution to the question: how to clean a disk.

Solution1: spray an approved cleanser onto the readable surface of the disk. use a gentle cloth suitable for disk cleaning or computer screen cleaning and gently wipe the readable surface clean.

Solution2: spray an approved cleanser onto the label surface of the disk. use a gentle cloth suitable for disk cleaning or computer screen cleaning and gently wipe the label surface clean.

Answer format: solution1/solution2
Answer: solution1