Sony Airs a New Ad for MP3 Players Five Times

Sony airs a new ad for MP3 players five times a night for a week on the top three television stations in Calgary. When market research is conducted on these ads during day 4, persons aged 55+ generally recall seeing a Sony ad, but most cannot identify the specific product. This is most likely due to:

A) advertising clutter
B) channel changing
C) consumer defence
D) boring programming
E) lack of product relevance