If you are unable to find your ad in the Microsoft Advertising Network results pages, why should you first examine the Impressions column in the Microsoft Advertising data summary tables?
(A) It tells you why your ad has been disapproved
(B) It tells you whether your campaign is active
(C) It shows the total number of clicks your ad has received
(D) It tells you if your ad is being displayed, even if you can’t find it