In the Traditional Advertising Model,advertisers Were Charged Using a ________

In the traditional advertising model,advertisers were charged using a ________ approach,which charged for the exposures to an ad.Google transformed the traditional model to a model called ________ where advertisers pay only when someone actually clicks on the ad and is sent to their website.

A) cost per thousand occurrences;cost-per-mil
B) cost per thousand incidences;cost-per-snap
C) cost per thousand impressions;cost-per-click
D) cost per thousand recurrences;cost-per-lead
E) cost per thousand frequencies;cost-per-hit