Is not the price you're paying for each of your clicks. Because the system is dynamic, this can vary a lot from auction to auction and depends on a variety of factors, such as the context of each query. This is just an average--meaning that the price you pay could be above or below that average. Higher-quality ads typically lead to lower costs, better ad positions, and more advertising success. When users see better ads, they're happier and more likely to actually click on those ads.
A) Maximum CPC
B) Ad Rank
C) Average CPC
D) Bid Price