Two identical positive charges are fixed on the y-axis at equal distances from the origin O . An particle with a negative charges starts on the x-axis at a large distance from O , moves along the x-axis , passes through O and moves far away from O. its acceleration a is taken as positive along its direction of motion . The particle's acceleration a is plotted against its x-coordinate. which of the following best represents the plot ?

Options

A.
B.
C.
D.

Answer

B