If one of the roots of the equation $x^2 - 5x - 14 = 0$ is the length of the semi-conjugate axis of the hyperbola $\frac{x^2}{a^2} - \frac{y^2}{b^2} = 1$ and the square of the other root is the semi-transverse axis,then the focus of the hyperbola that lies on the positive $x$-axis is

  • A
    $(5, 0)$
  • B
    $(\sqrt{65}, 0)$
  • C
    $(7, 0)$
  • D
    $(\sqrt{74}, 0)$

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