$A$ series resonant circuit consists of an inductor '$L$' of negligible resistance and a capacitor '$C$' which produces a resonant frequency '$f$'. If '$L$' is changed to $3L$ and '$C$' is changed to $6C$,the new resonant frequency will become:

  • A
    $\frac{f}{6}$
  • B
    $\frac{f}{3}$
  • C
    $\frac{f}{2 \sqrt{2}}$
  • D
    $\frac{f}{3 \sqrt{2}}$

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