Alice, a freelance graphic designer, has just completed a major project involving numerous large files and complex designs for a client. Considering the critical nature of this project, she wants to ensure her work is adequately backed up$.$ Alice recalls the $3-2-1$ backup rule she learned about but isn't sure how to apply it to her current situation. Given the options below, which best aligns with the $3-2-1$ backup strategy for her project files?

$1$ point

Save copies of the project files in three different folders on her computer$$s hard drive.

Keep a copy of the project files on her computer's hard drive, an external hard drive, and a cloud storage service.

Save all project files on her computer's hard drive and an external hard drive kept in her office.

Upload all project files to a cloud storage service and keep a copy on her computer's hard drive.