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Two very long, straight, parallel wires carry steady currents $I$ and $-I$ respectively. The distance  etween the wires is $d$. At a certain instant of time, a point charge $q$ is at a point equidistant from the two wires, in the plane of the wires. Its instantaneous velocity $v$ is perpendicular to the plane of wires. The magnitude of the force due to the magnetic field acting on the charge at this instant is
  • A$\frac{{{\mu _0}Iqv}}{{2\pi d}}$
  • B$\frac{{2{\mu _0}Iqv}}{{\pi d}}$
  • C$\frac{{{\mu _0}Iqv}}{{\pi d}}$
  • D$0$
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