If $f(x) = \begin{cases} \sqrt{1 - x} & 0 \le x \le 1 \\ (7x - 6)^{-1/3} & 1 < x \le 2 \end{cases}$,then $\int_{0}^{2} f(x) \, dx$ is equal to

  • A
    $\frac{31}{6}$
  • B
    $\frac{32}{21}$
  • C
    $\frac{1}{42}$
  • D
    $\frac{55}{42}$

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