When Google Chose a New Model for Its Advertising, It

When Google chose a new model for its advertising, it decided to

A) show advertisements that were the exact opposite of a consumer's profile to give the ads a higher awareness rate.
B) randomize the time periods between ads and banners rather than use a steady schedule, in order to keep the ads more noticeable.
C) customize all advertisements based upon customer's preferences of color, music, and font, information obtained through data files of customer site and search preferences.
D) create a "quality score" to predict how effective an ad would be based on factors such as click-through rates, advertiser history, and keyword performance.
E) create an "ad-option" page for consumers to create their own consumer profile-blocking out products and services they don't want and selecting the products and services they do.