If $\frac{d}{{dx}}G(x) = \frac{{{e^{\tan x}}}}{x}$ for $x \in (0, \pi/2)$,then $\int_{1/4}^{1/2} \frac{2}{x} e^{\tan(\pi x^2)} dx$ is equal to

  • A
    $G(\pi/4) - G(\pi/16)$
  • B
    $2[G(\pi/4) - G(\pi/16)]$
  • C
    $\pi[G(1/2) - G(1/4)]$
  • D
    $G(1/\sqrt{2}) - G(1/2)$

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