$\lim_{x \rightarrow \frac{\pi}{2}} (\tan^{2} x (\sqrt{2 \sin^{2} x + 3 \sin x + 4} - \sqrt{\sin^{2} x + 6 \sin x + 2}))$ का मान ज्ञात कीजिए।

  • A
    $\frac{1}{12}$
  • B
    $-\frac{1}{18}$
  • C
    $-\frac{1}{12}$
  • D
    $-\frac{1}{6}$

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