When sitelinks are set at both the campaign and ad group level, which will be displayed?

31) When sitelinks are set at both the campaign and ad group level, which will be displayed?

  A)  Sitelinks at the ad group level
  B)  Sitelinks with the highest ad rank
  C)  Sitelinks related to the query searched

  D)  Sitelinks from both the campaign and ad group