A Particle with Charge 2°C Is Placed at the Origin

A particle with charge 2°C is placed at the origin.An identical particle, with the same charge, is placed 2 m from the origin on the x axis, and a third identical particle, with the same charge, is placed 2 m from the origin on the y axis.The magnitude of the force on the particle at the origin is:

A) 9.0 * 10^-3 N
B) 6.4* 10^-3 N
C) 1.3* 10^-2 N
D) 1.8 *10^-2 N
E) 3.6 *10^-2 N