Which of the following is a correct statement about the practice of public relations?

A. The practice of public relations has changed from a marketing-research based approach to a more proactive approach.

B. The practice of public relations should be included in marketing strategy and plans, even if it generates only media attention and goodwill.

C. The practice of public relations is effective for only large organizations.

D. The practice of public relations has become more and more attractive, although the costs are often prohibitively high.