Three charged particles are held in place. Particle A has a net charge of +2 MµC and is at (0, 0)m. Particle B has a net charge of +4 MuC and is placed at (0.5, 0)m. Particle C has a net charge of -4 MuC and is placed at (0, 0.5)m. What is the angle of direction of the net force acting on particle A?
a) 45°
b) 135°
c) 225°
d) 315°