$\lim_{x \to 0} (\cos ax)^{\csc^2 bx}$ का मान है

  • A
    $e^{-\frac{a^2}{b^2}}$
  • B
    $e^{-\frac{a^2}{2b^2}}$
  • C
    $e^{-\frac{b^2}{2a^2}}$
  • D
    $e^{-\frac{2a^2}{b^2}}$

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