The force on a point charge +q kept at a distance d from the surface of an infinite grounded metal plate in a medium of permittivity ϵ is

• A. 0
• B. \(\frac{{{q^2}}}{{16\pi \epsilon {d^2}}}\) away from the plate
• C. \(\frac{{{q^2}}}{{16\pi \epsilon {d^2}}}\)towards the plate
• D. \(\frac{{{q^2}}}{{4\pi \epsilon {d^2}}}\)towards the plate