The capacitor of capacitance C in the circuit shown in fully charged initially. Resistance is R.–
![](https://www.sarthaks.com/?qa=blob&qa_blobid=12812966558576535047)
After the switch S is closed, the time taken to reduce the stored energy in the capacitor to half its initial value is
(A) RC/ 2
(B) 2RC in 2
(C) RC ln 2
(D) 2 RCln/2