[单选题]
The graph shows the variatix+f3 t9q (y 8zijs62g(4 cdhys, yrkzwon of the elyk/na3v/ 9cq lectric potential due to a point charge as a function the distance r from its c/kclv3n yq 9/aenter.
Which of the following gives the work done by the electric field‾by the electric field on a charge of −3μC when it is moved from $r_1$ to $r_2$ ?
A. −3μC divided by the shaded area
B. −3μC multiplied by the shaded area
C. −60μJ
D. +60μJ
