The electric potential at a point in free space due to a charge Q coulomb is $Q\times 10^{11}$ volts. The electric field at that point is -

Question

( A ) $12\pi \epsilon_0 Q\times10^{20} \frac{volt}{m}$
( B ) $4\pi \epsilon_0 Q\times10^{20} \frac{volt}{m}$
( C ) $12\pi \epsilon_0 Q\times10^{22} \frac{volt}{m}$
( D ) $4\pi \epsilon_0 Q\times10^{22} \frac{volt}{m}$