[单选题]
The graph shows the variation of the electric potei*+wdp. eqn,kj0hly0 ntial due to a poiyj9(r6y ,i +.dppumfsnt charge as a function the dirpi( fpd+9sjyy,6 u.mstance r from its center.
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
