If Your Ad Serving Option Is Set to "Optimize" and There

Multiple Choice

If your ad serving option is set to "optimize" and there are multiple variations of your text ads within the same ad group. AdWords will:

A) Automatically increase your quality score based on the average CTR of the ad group.
B) Automatically try to show the best performing ad more often.
C) Automatically lower your bids according to your CPA goal.
D) Automatically serve the ad with the highest maximum CPC the most often.