If $G$ is the geometric mean between $x$ and $y$,then the value of $\frac{1}{G^2 - x^2} + \frac{1}{G^2 - y^2}$ is:

  • A
    $G^2$
  • B
    $2/G^2$
  • C
    $1/G^2$
  • D
    $3G^2$

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