Finish the following sentence with the best choice: how to clean a disk.

Choices:
- 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.
- 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:
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.