If the time period $(T)$ of vibration of a liquid drop depends on surface tension $(S)$, radius $(r)$ of the drop and density $(\rho )$ of the liquid, then the expression of $T$ is

  • A

    $T = k\sqrt {\rho {r^3}/S} $

  • B

    $T = k\sqrt {{\rho ^{1/2}}{r^3}/S} $

  • C

    $T = k\sqrt {\rho {r^3}/{S^{1/2}}} $

  • D

    None of these

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