Which of the Following Best Describes a Component Bar Chart

Which of the following best describes a component bar chart?

A) A component bar chart represents all categories within a single bar.
B) tioned The height of each component is proportional to the frequency of the category that it represents.
C) When Component bar charts may be used as a comparison of two or more breakdowns as an alternative to using two pie charts.
D) All of these choices are correct.