Scenario 13-2 A National Radio Broadcaster's Association Hosts an Annual Convention That

Scenario 13-2
A national radio broadcaster's association hosts an annual convention that attracts station owners and program managers, as well as ad agencies and media planners. As a media planner, you take part in forums on the current status of traditional radio, the competition between AM and FM formats, the growth of satellite and Internet radio, and the rise of new technologies. During one forum, a professor of broadcasting initiates a discussion and poses a number of questions based on real-life situations that he has encountered over the years.​​
-(Scenario 13-2) A nationwide fast-food chain is developing next year's media plan and is reviewing the pros and cons of various media options.Radio advertising has its disadvantages,and many are being addressed at this convention.Which of the following is one of those disadvantages? 

A)  Short closing periods for ad placement  
B)  High per-contact cost 
C)  Limited reach 
D)  Poor audience attentiveness