A fully charged capacitor C with initial charge $q_0$ is connected to a coil of self inductance $L$ at $t=0$. The time at which the energy is stored equally between the electric and the magnetic field is :

Question

( A ) $\pi \sqrt{LC}$
( B ) $2 \pi \sqrt{LC}$
( C ) $\frac{\pi}{4} \sqrt{LC}$
( D ) $\sqrt{LC}$