અંતરાલ $(0, 2\pi)$ માં સમીકરણ $\cos x \cos \left(\frac{\pi}{3}-x\right) \cos \left(\frac{\pi}{3}+x\right)=\frac{1}{4}$ ના ઉકેલોનો સરવાળો શોધો.

  • A
    $4\pi$
  • B
    $\pi$
  • C
    $2\pi$
  • D
    $3\pi$

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