$\int \frac{(1-4 \sin^2 x) \cos x}{\cos (3x+2)} dx =$

  • A
    $(\cos 2) x - \frac{1}{3}(\sin 2) \log |\sec (3x+2)| + c$
  • B
    $(\sin 2) x - \frac{1}{3}(\cos 2) \log |\cos (3x+2)| + c$
  • C
    $(\sin 2) x + \frac{1}{3}(\cos 2) \log |\cos (3x+2)| + c$
  • D
    $(\cos 2) x + \frac{1}{3}(\sin 2) \log |\sec (3x+2)| + c$

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