$\int_{\pi}^{2\pi} [2\sin x] \, dx$ का मान,जहाँ $[\cdot]$ महत्तम पूर्णांक फलन को दर्शाता है,है

  • A
    $-\pi$
  • B
    $-2\pi$
  • C
    $-\frac{5\pi}{3}$
  • D
    $\frac{5\pi}{3}$

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