यदि $f(x) = 3x^{10} - 7x^8 + 5x^6 - 21x^3 + 3x^2 - 7$ है,तो $\lim_{\alpha \rightarrow 0} \frac{f(1-\alpha) - f(1)}{\alpha^3 + 3\alpha} = $

  • A
    $\frac{53}{3}$
  • B
    $\frac{-53}{3}$
  • C
    $\frac{52}{3}$
  • D
    $\frac{-52}{3}$

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