Perhaps One Reason Publicity and Press Agentry Are Too Often

Perhaps one reason publicity and press agentry are too often considered synonymous stems from

A) formation of the first public relations firm called the Publicity Bureau that specialized in general press agentry.
B) launching of the firm led by Ivy Lee that specialized in counseling top management in the value of building public confidence and trust.
C) development of corporate guidelines set down by Arthur Page and Paul Garrett.
D) efforts by Edward Bernays and Doris Fleischman to introduce social psychology techniques in developing strategic communications advice.