Choose the correct answer below. A. In a bar​ graph, a bar or rectangle is drawn for each class of the qualitative variable with its width corresponding to the class frequency or class relative frequency. In a pie​ chart, each class is represented by a pie​ (or circle) that is proportional to its relative frequency. B. In a bar​ graph, a bar or rectangle is drawn above each class of the qualitative variable corresponding to the class frequency or class relative frequency. In a pie​ chart, each slice of the pie corresponds to the relative frequency of a class of the qualitative variable. C. In a bar​ graph, a slice of a rectangle is shaded for each class of the qualitative variable with its width corresponding to the class frequency or class relative frequency. In a pie​ chart, each slice of the pie corresponds to the frequency of a class of the qualitative variable. D. In a bar​ graph, each bar or rectangle corresponds to the relative frequency of a class of the qualitative variable. In a pie​ chart, a slice is drawn above each class of the qualitative variable corresponding to the class frequency or class relative frequency.