Which of the Following Statements Would NOT Be an Application

Which of the following statements would NOT be an application of the marketing concept?

A) Let's speed up production and get these products to customers faster by eliminating the field test.
B) Let's show these product designs to some prospective buyers for their reactions.
C) Let's examine our points of distribution to see if we're reaching the market effectively.
D) Let's do some research to see which colors consumers prefer.
E) Let's ask customers which products they used most heavily.