The electric field near a conducting surface having a uniform surface charge density $\mathrm{\sigma }$ is given by 

• A

  $\frac{\mathrm{\sigma }}{{\mathrm{\epsilon }}_0}$  and is parallel to the surface

• B

  $\frac{2\mathrm{\sigma }}{{\mathrm{\epsilon }}_0}$ and is parallel to the surface

• C

  $\frac{\mathrm{\sigma }}{{\mathrm{\epsilon }}_0}$ and is normal to the surface

• D

  $\frac{2\mathrm{\sigma }}{{\mathrm{\epsilon }}_0}$ and is normal to the surface