Rhonda is about to form an online ad targeted toward Gen Zers for a new music streaming service. In the pre-production meeting, the client objects to a wardrobe choose or the brand "hero". "No one that age uses wired earbuds. Our target will not relate to our message. Get rid of them." The client is concerned with:

A. message channel
B. decoding
C. encoding
D. feedback
E. noise