Which best describes the "Optimize" ad rotation setting in AdWords?

82) Which best describes the "Optimize" ad rotation setting in AdWords?

  A)  The "Optimize" ad rotation setting allows your campaign to show ads more often, which can increase impressions
  B)  The "Optimize" ad rotation setting allows your campaign to automatically show the most relevant display URL for each ad
  C)  The "Optimize" ad rotation setting allows the AdWords system to automatically show the better performing ads more often

  D)  The "Optimize" ad rotation setting allows two of the ads from the ad group to show to a user on the same page