electrostatics

two thin infinite non conducting wire are bend as shown in fig.
the charge density of the wire varies as

ρ for |x|≥a
|y|≥a
otherwise
0
a test charge Q is placed at origin what will be the unit vector along its velocity vector at the time itl starts motion

i think it is in equillibrium but the answer says it starts its motion along negative x axis

please help