I am trying very hard to resist making any kind of joke about how the first two types of classes listed may have been a benefit to two generations of Hamiltons. But I failed, and there it is. Sorry! (Check your spelling 
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In all seriousness you should choose based on the topic rather than the format. If for some reason the same exact class is offered in multiple DE or AP formats, then you’d need to check with your guidance counselor for additional details about the intention of these offerings.