If angle between asymptotes of hyperbola $\frac{{{x^2}}}{{{a^2}}} - \frac{{{y^2}}}{3} = 4$ is $\frac {\pi }{3}$ , then its conjugate hyperbola is

  • A

    $\frac{{{y^2}}}{{12}} - \frac{{{x^2}}}{9} = 1$

  • B

    $\frac{{{y^2}}}{{12}} - \frac{{{x^2}}}{{25}} = 1$

  • C

    $\frac{{{y^2}}}{{12}} - \frac{{{x^2}}}{{36}} = 1$

  • D

    $\frac{{{y^2}}}{{12}} - \frac{{{x^2}}}{4} = 1$

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