A cylinder of radius r and length l is placed in an uniform electric field in such a way that the axis of the cylinder is parallel to the field. The flux of the field through the cylindrical surface is

• A

  $\frac{2\mathrm{rl}}{{\mathrm{\epsilon }}_{\mathrm{o}}}$

• B

  $\frac{\mathrm{l}}{{\mathrm{\epsilon }}_{\mathrm{o}}}$

• C

  $\frac{2\mathrm{\pi rl}}{{\mathrm{\epsilon }}_{\mathrm{o}}}$

• D

  Zero