यदि $\int_0^{t^2} xf(x)dx = \frac{2}{5}t^5, t > 0,$ है,तो $f\left( \frac{4}{25} \right) = $

  • A
    $\frac{2}{5}$
  • B
    $\frac{5}{2}$
  • C
    $-\frac{2}{5}$
  • D
    इनमें से कोई नहीं

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