If $y = \frac{e^{2x} + e^{-2x}}{e^{2x} - e^{-2x}}$,then $\frac{dy}{dx} = $

  • A
    $\frac{-4}{(e^{2x} - e^{-2x})^2}$
  • B
    $\frac{4}{(e^{2x} - e^{-2x})^2}$
  • C
    $\frac{-8}{(e^{2x} - e^{-2x})^2}$
  • D
    $\frac{8}{(e^{2x} - e^{-2x})^2}$

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