John is running a test campaign with C TR as the main K PI.He is trafficking five ads per placement and wants to make sure the best performing ads are displayed more often to viewers.Which setup is best suitable to John'sgoal?

The best setup is to create a delivery group with five ads and select "automatic optimization based on CTR" as the rotation method. This directly addresses John's goal of having the best-performing ads (based on CTR) displayed more often without manual intervention. The system will automatically prioritize ads with higher CTRs within that delivery group. Monitoring data and manually refreshing creatives is reactive and requires constant oversight, which is less efficient than automatic optimization. Adding five separate delivery groups to the same placement and detaching underperforming ones is overly complex and doesn't leverage the platform's built-in optimization capabilities for ad rotation within a single group.