If ${\sin ^2}\theta = \frac{1}{4},$ then the most general value of $\theta $ is

  • A

    $2n\pi \pm {( - 1)^n}\frac{\pi }{6}$

  • B

    $\frac{{n\pi }}{2} \pm {( - 1)^n}\frac{\pi }{6}$

  • C

    $n\pi \pm \frac{\pi }{6}$

  • D

    $2n\pi \pm \frac{\pi }{6}$

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