An advertiser‟s ad is not appearing in the Ad Preview and Diagnosis Tool when exact keywords are queried. Which action would help the advertiser to determine why the ad is not showing? 

A) Perform Google searches on the same keywords to build data points
B) Run a keyword diagnosis for the keyword in question 
C) Use the Keyword Planner to include more variations of a given keyword
D) View the Search terms report to determine the root cause