The last sentence of this passage implies that____.

A. if the experiments' results can be applied to the practice, the customers will be very likely to buy things according to the ads
B. if the Harvard group can succeed in finishing the research, they will use it in attracting more and more consumers into the market
C. the financial supporting corporations such as Coca Cola, General Motors can employ the experiments in their own marketing
D. the consumers may discover that those ads will always annoy them by jingling out of their heads and cause them headaches