While investigating a user who is suspected of collecting pornographic images on a company computer, you find that all of the files pointing to his guilt all have one thing in common. In your opinion, that one thing actually may prove his is innocent. What is that one thing common to all files that is the focus here?

a. All files appeared within moments of a single "TYPEDURL"/.
b. The HTTP headers indicates that each and every one of the suspicious files is the result of a REDIRECT.
c. All the files appear to have come from the same URL.
d. Most of the files were PNG files and not JPEG files.

b. The HTTP headers indicates that each and every one of the suspicious files is the result of a REDIRECT.