$\displaystyle \int _ {0} ^ {\pi /4} {\frac{1-4 \tan x} {4+ \tan x}} dx$ 의 값은?

• ①$\displaystyle \ln \left (\frac{5} {8} \sqrt 2 \right)$
• ②$\displaystyle \ln \left (\frac{3} {8} \sqrt 2 \right)$
• ③$\displaystyle \ln \left (\frac{5} {3} \sqrt 2 \right)$
• ④$\displaystyle \ln \left (\frac{2} {3} \sqrt 2 \right)$