Ad groups should be used to:

45) Ad groups should be used to:

  A)  organize your ads by a common theme, such as the types of products or services you want to advertise
  B)  manage your daily budget according to which keywords are a priority
  C)  control delivery of your ads so that they appear only to users in a specific geographic location

  D)  control the specific sites that your ad will be targeted to on the Google Display Network.