यदि $(2-5x)^{-1/5} = a_0 + a_1x + a_2x^2 + \ldots$ है,तो $\frac{a_1}{a_2} = $

  • A
    $\frac{1}{3}$
  • B
    $-\frac{2}{3}$
  • C
    $-\frac{1}{3}$
  • D
    $\frac{2}{3}$

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