The following are true for stem and leaf displays?
A. A stem and leaf display shows not only the frequencies of the class intervals but also the scores.
B. Steam and leaf displays are most useful for summarizing and describing data when the data set is relatively small.
C. Stem and leaf displays are most useful for summarizing and describing data when the data set is relatively large.
D. You can completely regenerate the raw data from a stem and leaf display.