A series of 4 graphics with a center box, labeled Volunteers, surrounded by 4 other labeled boxes. Graphic A: Volunteering time, Putting up a lawn sign, Showing little passion, Voting. Graphic B: Volunteering time, Putting up posters, Waiting until college, Voting. Graphic C: Volunteering time, Canvassing, Registering voters, Voting. Graphic D: Volunteering time, Making bumper stickers, Voting in the next election, Voting. Image by Education2020

In the above diagram, which chart accurately displays all of the ways that a volunteer can help a candidate win an election?
A.
chart A
B.
chart B
C.
chart C
D.
chart D