An advertiser is focused primarily on direct response, as opposed to branding. The advertiser should delete keywords from a search campaign if the keywords

An advertiser is focused primarily on direct response, as opposed to branding. The advertiser should delete keywords from a search campaign if the keywords:
  A)  generate many clicks and conversions
  B)  generate many impressions and very few conversions
  C)  contain more than two words in the phrase
  D)  contain words that are duplicated in a display campaign