The Staff of the Accounting and the Quality Control Departments

The staff of the accounting and the quality control departments rated their respective supervisor's leadership style as either (1) authoritarian or (2) participatory.Sixty-eight percent of the accounting staff rated their supervisor "authoritarian," and thirty-two percent rated him/her "participatory." Forty percent of the quality control staff rated their supervisor "authoritarian," and sixty percent rated him/her "participatory." The best graphic depiction of these data would be two ___________________.

A) histograms
B) frequency polygons
C) ogives
D) pie charts
E) scatter plots