If you go to the GirlsOn.com Web site, you'll find a book section sponsored by Amazon.com. Amazon.com, the largest retailer of books on the Internet also has a similar arrangement with Dogpile.com, and at other computer search engine Web sites. Amazon.com is using:
A. a button.
B. a banner.
C. a regular sponsorship.
D. an interstitial.
E. push technology.
Answer: C