Which of the following are true about segmentation?

53) Which of the following are true about segmentation?

A)  Segmentation allows you to combine data from multiple web properties in your reports.
B)  Segmentation allows you to isolate and analyze subsets of your data. C)  Segmentation is a technique that should only be used by experienced analysts.
D)  Segmentation can help you find the underlying causes of changes to your aggregate data.