Per Thousand Is a Measure in Which

Multiple Choice

per thousand is a measure in which

A) a fixed amount of money is paid for every 1,000 times an ad loads and a visitor might see it-but not whether the user has actually reacted to it.
B) a fixed amount of money paid to the site for every visitor who clicks on an ad and goes from the website to the advertiser's site.
C) a fixed amount of money paid to the site for every sale that originated from an ad posted on that site.
D) a fixed amount of money is paid to a site for posting an ad for a finite amount of time.
E) a fixed discount given to a visitor for clicking on an ad.