National Manufacturers and Retailers Often Pay a Service Provider to Monitor

National manufacturers and retailers often pay a service provider to monitor television ads around the country,in order to ensure that their ads are shown in their entirety during the time frames that were purchased.This service provider is monitoring for IMC noise problems associated with

A) competing messages.
B) lack of clarity in the message.
C) a poor choice of medium.
D) a flaw in the medium.
E) an extended feedback loop.