After Jones finished reading an article on the 101 Dumbest Moments in Business at the Business 2.0 Web site, he closed the file. Then he saw on his screen an ad that invited him to subscribe to the magazine. This ad was an example of:
A. content sponsorship.
B. a pop-up.
C. push technology.
D. functional sponsorship.
E. a pop-under.
Answer: E