यदि $\sec (\log _2 y^2) = \operatorname{cosec} (\log _2 x^2)$ है, तो $\frac{dy}{dx} =$

  • A
    $\frac{x}{y}$
  • B
    $\frac{y}{x}$
  • C
    $-\frac{y}{x}$
  • D
    $-\frac{x}{y}$

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