Procter & Gamble Company $($P&G$)$ is an American multinational consumer goods corporation headquartered in Cincinnati, Ohio. P&G wants to start using cost$-$per$-$click $($CPC$)$ advertising. With this advertising model, search engines charge advertisers

each time the ad appears on a search page.

each time the ad is read

each time a consumer hits the ad and is transported to the website

for every impression created by the ad