The Performance Measure for Social Networks Known as Average Page

The performance measure for social networks known as average page views per visitor is the number of

A) visitors who land on a brand's Facebook page divided by the number who arrive by clicking on a Google ad.
B) visitors to a brand's website.
C) visitors who view pages and comment in a given time period.
D) page views divided by visitors in a given time period.
E) total visitors to a website divided by those who click on a link.