Series LCR Circuit – Impedance

2021 1 question

1. 1 Alternating Current Medium
   An inductor of inductance $L$, a capacitor of capacitance $C$ and a resistor of resistance $R$ are connected in series to an ac source of potential difference $V$ volts as shown in figure. Potential difference across $L$, $C$ and $R$ is 40 V, 10 V and 40 V, respectively. The amplitude of current flowing through LCR series circuit is $10\sqrt{2}\ A$. The impedance of the circuit is:
   
   A $5/\sqrt{2}\ \Omega$ B $4\ \Omega$ C $5\ \Omega$ D $4\sqrt{2}\ \Omega$
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