Which of the Following Statements About Direct Marketing Is True

Which of the following statements about direct marketing is true?

A) Direct marketing is seldom, if ever, used by companies that have a sales force.
B) One of the major tools of direct marketing is indirect-response advertising.
C) Direct marketing does not exist beyond direct mail and mail-order catalogues.
D) Direct marketing has not traditionally been considered an element of the promotional mix, since it had distinct objectives, strategies and tactics.