A person approaches a network administrator and wants advice on how to send encrypted email from home.
The end user does not want to have to pay for any license fees or manage server services. Which of the
following is the most secure encryption protocol that the network administrator should recommend?

A.
IP Security (IPSEC)

B.
Multipurpose Internet Mail Extensions (MIME)

C.
Pretty Good Privacy (PGP)

D.
Hyper Text Transfer Protocol with Secure Socket Layer (HTTPS)