(A) Test as many different versions of their ad copy as possible
(B) Limit the number of versions they test
(C) Include both landing page and ad copy tests for efficiency
(D) Keep the ad copy as generic as possible
This question is a part of the Optimize performance in DoubleClick Search Assessment. You can find answers to all the questions asked in this exam in our Optimize performance in DoubleClick Search Assessment Answers page.