What Is Perhaps the Greatest Obstacle to Implementing Integrated Marketing

Multiple Choice

What is perhaps the greatest obstacle to implementing integrated marketing communications (IMC) ? 

A)  There is a lack of interest in IMC by top management. 
B)  The cost of implementing an IMC program is difficult to justify. 
C)  Little can be gained by coordinating the various marketing communications elements. 
D)  Few providers of marketing communication services have the far-ranging skills to plan and execute programs that cut across all major forms of marketing communications. 
E)  Measuring the return on investment is nearly impossible.