A Particle (M = 50 G,q = 5 $\mu$ C)is Released from Rest When It Is 50 Cm from Released

A particle (m = 50 g,q = 5.0 $\mu$ C) is released from rest when it is 50 cm from a second particle (Q = -20 $\mu$ C) .Determine the magnitude of the initial acceleration of the 50-g particle.

A) 54 m/s²
B) 90 m/s²
C) 72 m/s²
D) 65 m/s²
E) 36 m/s²