यदि $3 \sin^{2} x - 8 \sin x + 4 = 0$ और $x \in \left(\frac{\pi}{2}, \pi\right)$ है,तो $\tan x = $

  • A
    $-\frac{\sqrt{5}}{2}$
  • B
    $\frac{2}{\sqrt{5}}$
  • C
    $-\frac{2}{\sqrt{5}}$
  • D
    $\frac{\sqrt{5}}{2}$

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