If $f(x) = \begin{cases} \frac{\sin((p+1)x) + \sin x}{x} & , x < 0 \\ q & , x = 0 \\ \frac{\sqrt{x+x^2} - \sqrt{x}}{x^{3/2}} & , x > 0 \end{cases}$ is continuous at $x = 0$,then the ordered pair $(p, q)$ is equal to

  • A
    $(-3/2, -1/2)$
  • B
    $(5/2, 1/2)$
  • C
    $(-1/2, 3/2)$
  • D
    $(-3/2, 1/2)$

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