An electric dipole consisting of two opposite charges of $2 x {10}^{-6}$ C each separated by a distance of 3 cm is placed in an electric field of $2 x {10}^5$ N/C. The maximum torque on the dipole will be

• A

  $12\times {10}^{-1} \mathrm{N} \mathrm{m}$

• B

  $12\times {10}^{-3}\mathrm{Nm}$

• C

  $24\times {10}^{-1} \mathrm{N} \mathrm{m}$

• D

  $24\times {10}^{-3} \mathrm{N} \mathrm{m}$