(A) Yes, the publisher should make sure the medium rectangle ad unit comes first in their HTML code.
(B) Yes, the publisher should opt in Image ads to both of ad units.
(C) Yes, the publisher should change small square ad unit into large rectangle ad unit.
This question is a part of the Scaled Partner Management Exam. You can find answers to all the questions asked in this exam in our Scaled Partner Management Exam Answers page.