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) CPM = (Advertising cost ($) ÷ Audience size) × 100.
B) CPM = (Frequency ($) ÷ Audience size) × 1,000.
C) CPM = (Frequency ($) ÷ Audience size) × 100.
D) CPM = (Advertising cost ($) ÷ Audience size) × 1,000.
E) CPM = (Advertising cost ($) ÷ Audience sizE) × 1,000,000.