One of the Most Common Measures in Advertising Is Cost

One of the most common measures in advertising is cost per thousand impressions (CPM) .The CPM is calculated as follows:

A) Cost per thousand impressions = Advertising cost ($) / Impressions generated (in 100s) .
B) Cost per thousand impressions = Total net revenue ($) / Impressions generated in 1000s) .
C) Cost per thousand impressions = Total gross revenue ($) / Impressions generated (in 1000s) .
D) Cost per thousand impressions = Advertising cost ($) / Impressions generated (in 1000s) .
E) Cost per thousand impressions = Advertising cost ($) / Impressions generated (in 500s) .