Two particles with positive charges of $\displaystyle {q}_{{1}}$ and $\displaystyle {q}_{{2}}$, respectively, lie on the $\displaystyle {x}$-axis, with the particle of charge $\displaystyle {q}_{{1}}$ at the origin and the other particle at $\displaystyle {x}={d}$, as shown in the figure. The particle at the origin is held fixed in place, and the other particle is released and moves to the right. Which of the following graphs best represents the electric force exerted on the released particle as a function of position $\displaystyle {x}$?