Len, Your Supervisor, Asks You to Research Security Issues Surrounding

Len, your supervisor, asks you to research security issues surrounding distributing Excel workbooks internally to employees and externally to clients. He wants to discuss your research and resammendations next Tuesday. To begin Tuesday's meeting, Len asks you to explain the difference between a digital signature and a digital certificate. You explain that ____.

A) a digital certificate is an electronic secure stamp of authentication; a digital signature is an attachment to a file or e-mail message that vouches for its authenticity
B) you are not sure; perhaps someone from the IT department can answer that question
C) a digital signature is an electronic secure stamp of authentication; a digital certificate is an attachment to a file or e-mail message that vouches for its authenticity
D) digital signatures and digital certificates play no role in security issues surrounding the internal or external exchange of Excel workbooks