Which of the following techniques can be used to sanitize the data contained on a hard drive while allowing for the hard drive to be repurposed?

A wipe tool overwrites all data on a hard drive with zeros or random patterns, effectively sanitizing the data while leaving the drive physically intact and reusable. Degaussing uses a strong magnetic field to destroy data, but it also renders the hard drive unusable. A drive shredder physically destroys the hard drive, making it impossible to repurpose. A retention platform is a storage solution for data, not a sanitization method.