A Full-Service Advertising Agency _____

A full-service advertising agency _____.

A)  necessitates employing an advertising staff and absorbing the overhead required to maintain the staff's operations 
B)  is unprofitable unless a company does a large and continuous amount of advertising 
C)  has the advantage of complete control over the advertising function 
D)  performs all the basic functions of advertising for a client 
E)  does not perform other marcom functions, such as sales promotion and publicity