In an `LCR` circuit `R=100 ohm`. When capacitance `C` is removed, the current lags behind the voltage by `pi//3`. When inductance `L` is removed, the current leads the voltage by `pi//3`. The impedence of the circuit is
A. `50 Omega`
B. `100 Omega`
C. `200 Omega`
D. `400 Omega`