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