$\int \left( \frac{4 \tan^4 x + 3 \tan^2 x - 1}{\tan^2 x + 4} \right) dx =$

  • A
    $4 \tan x - \frac{17}{4} \tan^{-1} \left( \frac{\tan x}{4} \right) + c$
  • B
    $4 \tan x - \frac{17}{4} \tan^{-1} \left( \frac{\tan x}{2} \right) + c$
  • C
    $4 \tan x - \frac{17}{2} \tan^{-1} \left( \frac{\tan x}{2} \right) + c$
  • D
    $2 \tan x - \frac{17}{2} \tan^{-1} \left( \frac{\tan x}{2} \right) + c$

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