$\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \frac{\sin ^2 x}{1+2^x} \,d x$ का मान है

  • A
    $\frac{\pi}{4}$
  • B
    $\frac{\pi}{8}$
  • C
    $\frac{\pi}{2}$
  • D
    $4 \pi$

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