Let $\alpha \in (0,1)$ and $\beta = \log_{e}(1-\alpha)$. Let $P_n(x) = x + \frac{x^2}{2} + \frac{x^3}{3} + \dots + \frac{x^n}{n}$ for $x \in (0,1)$. Then the integral $\int_{0}^{\alpha} \frac{t^{50}}{1-t} dt$ is equal to

  • A
    $\beta - P_{50}(\alpha)$
  • B
    $-\left(\beta + P_{50}(\alpha)\right)$
  • C
    $P_{50}(\alpha) - \beta$
  • D
    $\beta + P_{50}(\alpha)$

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