Which one of the following best describes spamming?

Which one of the following best describes spamming?

A.
Authorized sending of e-mail to business and people who have agreed to receive your
message.

B.
Unauthorized receiving of e-mails by businesses and people who have not agreed to receive
your messages.

C.
Mail that comes through the post office rather than electronic format.

D.
Unauthorized sending of e-mails to businesses and people who have not agreed to receive
your messages.