An LCR circuit contains R = 50 $\mathrm{\Omega }$ , L = 1 mH and C = 0.1 $\mathrm{\mu }$F. The impedance of the circuit will be minimum for a frequency of

• A

  $\frac{{10}^5}{2\mathrm{\pi }}{\mathrm{s}}^{-1}$

• B

  $\frac{{10}^6}{2\mathrm{\pi }}{\mathrm{s}}^{-1}$

• C

  $2\mathrm{\pi }\times {10}^5{\mathrm{s}}^{-1}$

• D

  $2\mathrm{\pi }\times {10}^6{\mathrm{s}}^{-1}$