An oil drop having charge \[2e\] is kept stationary between two parallel horizontal plates 2.0 cm apart when a potential difference of 12000 volts is applied between them. If the density of oil is\[900kg/{{m}^{3}}\], the radius of the drop will be [AMU 1999]

• A.            \[2.0\times {{10}^{-6}}m\]
• B.                                      \[1.7\times {{10}^{-6}}m\]
• C.            \[1.4\times {{10}^{-6}}m\]
• D.                                      \[1.1\times {{10}^{-6}}m\]