Which of the Following Observations About Advertising Agencies Is FALSE

Which of the following observations about advertising agencies is FALSE?

A) They are specialists in planning and handling mass-selling details for advertisers.
B) They are dependent on the advertiser and have a mixed viewpoint.
C) They may be full-service agencies who handle any activities related to advertising,publicity,or sales promotion.
D) They may handle overall marketing strategy planning.
E) They can often do the job more economically than a company's own department.