A live issues are an unwanted behavior that affects a DoubleClick Rich Media ad when it’s placed on a test page or when the ad is live on the site placement.

A live issues are an unwanted behavior that affects a DoubleClick Rich Media ad when it’s placed on a test page or when the ad is live on the site placement.
A) Trafficking mistakes
B) Conflict between site code and an ad tag
C) mistakes made in the development of an ad
D) all of the listed answers are correct