You are composing an e-mail message. You add a digital signature to the e-mail. Now, you want to
ensure that the e-mail message is received unaltered. You also want a notification to tell you who
opened the e-mail and when it was opened. Which of the following will you use to accomplish the
task?

A.
Request a read receipt.

B.
Request a delivery receipt.

C.
Request an S/MIME receipt.

D.
Use RSS Feeds.