Which of the Following Statements Is True About Pie Charts

Which of the following statements is true about pie charts?

A) In a pie chart, the largest slice should begin at 6 o'clock and go counterclockwise.
B) Exploding slices should be used extensively in pie charts.
C) Pie slices should complete a whole, that is, add up to 100% of a data series.
D) The slices of the pie charts should be free from data labels.
E) 3-D pie charts are used to represent complicated numerical data.