Every time your ad is eligible to show, AdWords calculates its Ad Rank using your bid amount, components of Quality Score, and:

111) Every time your ad is eligible to show, AdWords calculates its Ad Rank using your bid amount, components of Quality Score, and:

   A)  the daily budget you've set
   B)  your historical conversion rate
   C)  the expected impact of extensions and other ad formats

   D)  the search ranking of your website