You received an e-mail message from a co-worker. It includes a .zip file as an attachment. The email message explains that the attachment updates a critical flaw in the operating system and
provides detailed instructions for installing the program. Which step should you perform first?

A.
Open the attached file, which is safe because the e-mail server would have deleted it if it were
dangerous.

B.
Call the IT department and verify the nature of the attached file.

C.
Save the file to your desktop before opening it.

D.
Download the same program from the Internet, then install it.