An analyst has collected the following data on voters for a winning candidate in a mayoral race:
18-25 years old: 2,987
26-35 years old: 5,974
36-50 years old: 9,564
51-65 years old: 10,983
66-80 years old: 6,945
81-95 years old: 1,093
Which type of graph would be best to use to display the number in each age group as a portion of the total number of voters? (Multiple Choice)
A. a bar graph
B. a circle graph
C. a histogram
D. a line graph