In the case of a placement targeted ad on the Google Display Network, the Quality Score portion of calculating Ad Rank is based on:

26)  In the case of a placement targeted ad on the Google Display Network, the Quality Score portion of calculating Ad Rank is based on:

  A)  the quality of your image
  B)  the quality of your landing page
  C)  the maximum CPC of the keyword that triggered an ad.

  D)  your daily budget