किसी भी पूर्णांक $n$ के लिए, समाकलन $\int_0^\pi e^{\cos^2 x} \cos^3(2n+1)x \, dx$ का मान ज्ञात कीजिए।

  • A
    $\pi$
  • B
    $1$
  • C
    $0$
  • D
    $\frac{3\pi}{2}$

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