यदि $\lim_{x \to 0} \frac{45^x - 9^x - 5^x + 1}{(k^x - 1)(3^x - 1)} = 2$ है, तो $k$ का मान है...

  • A
    $45$
  • B
    $9$
  • C
    $5$
  • D
    $3$

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