When would you use campaign analytics to analyze your data in HubSpot?

Campaign analytics helps you compare the overall performance of your campaigns against each other, and draw conclusions about how well your campaigns are creating contact or revenue over all.
Campaign analytics helps you compare the specific assets in each of your campaigns against each other, and draw conclusions on the type of content and distribution strategy that works best for your audience.
Campaign analytics doesn’t help you analyze your HubSpot data. It’s useless.
Campaign analytics helps you compare the traffic sources each of your visitors are coming from originally.

The correct answer is:

Campaign analytics helps you compare the overall performance of your campaigns against each other, and draw conclusions about how well your campaigns are creating contact or revenue over all.