Which of the Following Statements About Direct Marketing Is True

Which of the following statements about direct marketing is true?

A) Direct marketing has lost popularity over the past two decades, owing primarily to changing lifestyles and technologies.
B) Direct marketing includes a variety of techniques and activities such as direct mail, telemarketing, and direct response advertising.
C) Direct marketing and direct mail are synonymous.
D) Business-to-business marketers criticize direct marketing as an ineffective way to identify potential sales leads, communicate with customers, and provide them with information about their products or services.