A security incident occurs that requires a systems administrator to take an image of a user`s workstation hard drive. Which of the following should be taken at the time the system image is generated and retained through the file of the investigation to assure files have not been modified since? 

Answer options:

A. A checksum hash of the drive image or files
B. Copies of the system logs at specific intervals
C. A snapshot of the file system
D. The user`s credentials and permissions

A