How does Personalization mode in SmartEdit visualize multiple customizations simultaneously? (2)

How does Personalization mode in SmartEdit visualize multiple customizations simultaneously? (2)
A . SmartEdit shows only those components that are different as a result of customization
B . SmartEdit draws color-coded boxes around the customizations for each segment
C . SmartEdit labels the customized components as "A", "B" and so on, referring to different djsegments
D . SmartEdit shows customized components in a lightbox, with other components deemphasized

Answer: B,C