If $x, {G_1},{G_2},\;y$ be the consecutive terms of a $G.P.$, then the value of ${G_1}\,{G_2}$ will be

  • A

    $\frac{y}{x}$

  • B

    $\frac{x}{y}$

  • C

    $xy$

  • D

    $\sqrt {xy} $

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